12956965040 has 40 divisors (see below), whose sum is σ = 30131949408. Its totient is φ = 5181580800.

The previous prime is 12956965033. The next prime is 12956965057. The reversal of 12956965040 is 4056965921.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379724 + ... + 412436.

Almost surely, 2^12956965040 is an apocalyptic number.

12956965040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12956965040 is an abundant number, since it is smaller than the sum of its proper divisors (17174984368).

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

12956965040 is a wasteful number, since it uses less digits than its factorization.

12956965040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37677 (or 37671 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 47.

The spelling of 12956965040 in words is "twelve billion, nine hundred fifty-six million, nine hundred sixty-five thousand, forty".