12901279264 has 12 divisors (see below), whose sum is σ = 25399393614. Its totient is φ = 6450639616.

The previous prime is 12901279253. The next prime is 12901279267. The reversal of 12901279264 is 46297210921.

It can be written as a sum of positive squares in only one way, i.e., 8504528400 + 4396750864 = 92220^2 + 66308^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12901279264.

It is not an unprimeable number, because it can be changed into a prime (12901279267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201582457 + ... + 201582520.

Almost surely, 2^12901279264 is an apocalyptic number.

It is an amenable number.

12901279264 is a deficient number, since it is larger than the sum of its proper divisors (12498114350).

12901279264 is an equidigital number, since it uses as much as digits as its factorization.

12901279264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403164987 (or 403164979 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 12901279264 in words is "twelve billion, nine hundred one million, two hundred seventy-nine thousand, two hundred sixty-four".