15673036864 has 21 divisors (see below), whose sum is σ = 31103170077. Its totient is φ = 7836017664.

The previous prime is 15673036859. The next prime is 15673036871. The reversal of 15673036864 is 46863037651.

The square root of 15673036864 is 125192.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2622259264 + 13050777600 = 51208^2 + 114240^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 993712 + ... + 1009360.

It is an arithmetic number, because the mean of its divisors is an integer number (1481103337).

Almost surely, 2^15673036864 is an apocalyptic number.

15673036864 is the 125192-nd square number.

It is an amenable number.

15673036864 is a deficient number, since it is larger than the sum of its proper divisors (15430133213).

15673036864 is an frugal number, since it uses more digits than its factorization.

15673036864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31310 (or 15651 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 49.

Multiplying 15673036864 by its sum of digits (49), we get a square (767978806336 = 876344²).

The spelling of 15673036864 in words is "fifteen billion, six hundred seventy-three million, thirty-six thousand, eight hundred sixty-four".