12697559924 has 36 divisors (see below), whose sum is σ = 25857153504. Its totient is φ = 5440011696.

The previous prime is 12697559911. The next prime is 12697559933. The reversal of 12697559924 is 42995579621.

It is a super-2 number, since 2×12697559924² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 705137 + ... + 722919.

It is an arithmetic number, because the mean of its divisors is an integer number (718254264).

Almost surely, 2^12697559924 is an apocalyptic number.

12697559924 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12697559924 is an abundant number, since it is smaller than the sum of its proper divisors (13159593580).

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

12697559924 is a wasteful number, since it uses less digits than its factorization.

12697559924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21444 (or 21435 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 59.

The spelling of 12697559924 in words is "twelve billion, six hundred ninety-seven million, five hundred fifty-nine thousand, nine hundred twenty-four".