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12915290164 = 2271624928387
BaseRepresentation
bin11000000011100111…
…11011000000110100
31020100002101201102011
430001303323000310
5202422303241124
65533323254004
7635024104120
oct140163730064
936302351364
1012915290164
115528387727
12260537a304
1312aa98293a
148a73d8580
15508cbc994
hex301cfb034

12915290164 has 24 divisors (see below), whose sum is σ = 25833080000. Its totient is φ = 5534588736.

The previous prime is 12915290123. The next prime is 12915290191. The reversal of 12915290164 is 46109251921.

It is a congruent number.

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, 440779 + ... + 469165.

Almost surely, 212915290164 is an apocalyptic number.

12915290164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12915290164 is an abundant number, since it is smaller than the sum of its proper divisors (12917789836).

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

12915290164 is a wasteful number, since it uses less digits than its factorization.

12915290164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44647 (or 44645 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 12915290164 in words is "twelve billion, nine hundred fifteen million, two hundred ninety thousand, one hundred sixty-four".

Divisors: 1 2 4 7 14 28 16249 28387 32498 56774 64996 113548 113743 198709 227486 397418 454972 794836 461260363 922520726 1845041452 3228822541 6457645082 12915290164