15933697964 has 6 divisors (see below), whose sum is σ = 27883971444. Its totient is φ = 7966848980.

The previous prime is 15933697961. The next prime is 15933697973. The reversal of 15933697964 is 46979633951.

It is a junction number, because it is equal to n+sod(n) for n = 15933697897 and 15933697906.

It is not an unprimeable number, because it can be changed into a prime (15933697961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1991712242 + ... + 1991712249.

It is an arithmetic number, because the mean of its divisors is an integer number (4647328574).

Almost surely, 2^15933697964 is an apocalyptic number.

It is an amenable number.

15933697964 is a deficient number, since it is larger than the sum of its proper divisors (11950273480).

15933697964 is a wasteful number, since it uses less digits than its factorization.

15933697964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3983424495 (or 3983424493 counting only the distinct ones).

The product of its digits is 33067440, while the sum is 62.

The spelling of 15933697964 in words is "fifteen billion, nine hundred thirty-three million, six hundred ninety-seven thousand, nine hundred sixty-four".