15656463412 has 12 divisors (see below), whose sum is σ = 29010505860. Its totient is φ = 7367747456.

The previous prime is 15656463409. The next prime is 15656463419. The reversal of 15656463412 is 21436465651.

It can be written as a sum of positive squares in 2 ways, for example, as 4472131876 + 11184331536 = 66874^2 + 105756^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15656463419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115120987 + ... + 115121122.

It is an arithmetic number, because the mean of its divisors is an integer number (2417542155).

Almost surely, 2^15656463412 is an apocalyptic number.

It is an amenable number.

15656463412 is a deficient number, since it is larger than the sum of its proper divisors (13354042448).

15656463412 is a wasteful number, since it uses less digits than its factorization.

15656463412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230242130 (or 230242128 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

The spelling of 15656463412 in words is "fifteen billion, six hundred fifty-six million, four hundred sixty-three thousand, four hundred twelve".