12403685972 has 24 divisors (see below), whose sum is σ = 22513862280. Its totient is φ = 5974473600.

The previous prime is 12403685951. The next prime is 12403686041. The reversal of 12403685972 is 27958630421.

It can be written as a sum of positive squares in 4 ways, for example, as 5177665936 + 7226020036 = 71956^2 + 85006^2 .

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, 399947 + ... + 429842.

It is an arithmetic number, because the mean of its divisors is an integer number (938077595).

It is a 1-persistent number, because it is pandigital, but 2⋅12403685972 = 24807371944 is not.

Almost surely, 2^12403685972 is an apocalyptic number.

It is an amenable number.

12403685972 is a deficient number, since it is larger than the sum of its proper divisors (10110176308).

12403685972 is a wasteful number, since it uses less digits than its factorization.

12403685972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829931 (or 829929 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 12403685972 in words is "twelve billion, four hundred three million, six hundred eighty-five thousand, nine hundred seventy-two".