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128013216258 = 23144727315399
BaseRepresentation
bin111011100111000101…
…1101010101000000010
3110020102110110011200210
41313032023222220002
54044132340410013
6134450343254550
712151200245634
oct1671613525002
9406373404623
10128013216258
114a32113a0a4
122098744a456
13c0c13a6c55
1462a5690a54
1534e3711cc3
hex1dce2eaa02

128013216258 has 32 divisors (see below), whose sum is σ = 256344652800. Its totient is φ = 42618073680.

The previous prime is 128013216257. The next prime is 128013216301. The reversal of 128013216258 is 852612310821.

It is not an unprimeable number, because it can be changed into a prime (128013216257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23707843 + ... + 23713241.

It is an arithmetic number, because the mean of its divisors is an integer number (8010770400).

Almost surely, 2128013216258 is an apocalyptic number.

128013216258 is an abundant number, since it is smaller than the sum of its proper divisors (128331436542).

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

128013216258 is a wasteful number, since it uses less digits than its factorization.

128013216258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9582.

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 128013216258 in words is "one hundred twenty-eight billion, thirteen million, two hundred sixteen thousand, two hundred fifty-eight".

Divisors: 1 2 3 6 1447 2731 2894 4341 5399 5462 8193 8682 10798 16197 16386 32394 3951757 7812353 7903514 11855271 14744669 15624706 23437059 23710542 29489338 44234007 46874118 88468014 21335536043 42671072086 64006608129 128013216258