12856602997 has 12 divisors (see below), whose sum is σ = 15605886816. Its totient is φ = 10540816440.

The previous prime is 12856602991. The next prime is 12856603007. The reversal of 12856602997 is 79920665821.

It is not a de Polignac number, because 12856602997 - 2³ = 12856602989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12856602991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5702779 + ... + 5705032.

It is an arithmetic number, because the mean of its divisors is an integer number (1300490568).

Almost surely, 2^12856602997 is an apocalyptic number.

It is an amenable number.

12856602997 is a deficient number, since it is larger than the sum of its proper divisors (2749283819).

12856602997 is a wasteful number, since it uses less digits than its factorization.

12856602997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11407848 (or 11407841 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 12856602997 in words is "twelve billion, eight hundred fifty-six million, six hundred two thousand, nine hundred ninety-seven".