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68463566424 = 23321191994063
BaseRepresentation
bin111111110000101111…
…110001111001011000
320112201100021112020100
4333300233301321120
52110203133111144
651241323455400
74642406466321
oct776057617130
9215640245210
1068463566424
1127042997860
1211328387560
1365c1039c66
14345694b448
151baa7bb269
hexff0bf1e58

68463566424 has 96 divisors (see below), whose sum is σ = 202500979200. Its totient is φ = 20723739840.

The previous prime is 68463566389. The next prime is 68463566441. The reversal of 68463566424 is 42466536486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 680817 + ... + 774879.

It is an arithmetic number, because the mean of its divisors is an integer number (2109385200).

Almost surely, 268463566424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68463566424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101250489600).

68463566424 is an abundant number, since it is smaller than the sum of its proper divisors (134037412776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68463566424 is a wasteful number, since it uses less digits than its factorization.

68463566424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95005 (or 94998 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 54.

The spelling of 68463566424 in words is "sixty-eight billion, four hundred sixty-three million, five hundred sixty-six thousand, four hundred twenty-four".

Divisors: 1 2 3 4 6 8 9 11 12 18 22 24 33 36 44 66 72 88 99 132 198 264 396 792 919 1838 2757 3676 5514 7352 8271 10109 11028 16542 20218 22056 30327 33084 40436 60654 66168 80872 90981 94063 121308 181962 188126 242616 282189 363924 376252 564378 727848 752504 846567 1034693 1128756 1693134 2069386 2257512 3104079 3386268 4138772 6208158 6772536 8277544 9312237 12416316 18624474 24832632 37248948 74497896 86443897 172887794 259331691 345775588 518663382 691551176 777995073 950882867 1037326764 1555990146 1901765734 2074653528 2852648601 3111980292 3803531468 5705297202 6223960584 7607062936 8557945803 11410594404 17115891606 22821188808 34231783212 68463566424