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69384926480 = 2454121153941
BaseRepresentation
bin100000010011110101…
…0011111010100010000
320122002112222110121212
41000213222133110100
52114100020121410
651512555435252
75004265100252
oct1004752372420
9218075873555
1069384926480
1127475a89251
1211544a55b28
136709ba1b1c
143503067cd2
151c11616b05
hex1027a9f510

69384926480 has 40 divisors (see below), whose sum is σ = 165254594904. Its totient is φ = 27077043200.

The previous prime is 69384926467. The next prime is 69384926581. The reversal of 69384926480 is 8462948396.

It can be written as a sum of positive squares in 4 ways, for example, as 1136498944 + 68248427536 = 33712^2 + 261244^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10573691 + ... + 10580250.

Almost surely, 269384926480 is an apocalyptic number.

It is an amenable number.

69384926480 is an abundant number, since it is smaller than the sum of its proper divisors (95869668424).

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

69384926480 is a wasteful number, since it uses less digits than its factorization.

69384926480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21153995 (or 21153989 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 59.

The spelling of 69384926480 in words is "sixty-nine billion, three hundred eighty-four million, nine hundred twenty-six thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 41 80 82 164 205 328 410 656 820 1640 3280 21153941 42307882 84615764 105769705 169231528 211539410 338463056 423078820 846157640 867311581 1692315280 1734623162 3469246324 4336557905 6938492648 8673115810 13876985296 17346231620 34692463240 69384926480