15768904536064 has 39 divisors (see below), whose sum is σ = 31534467477087. Its totient is φ = 7884325195776.

The previous prime is 15768904536061. The next prime is 15768904536113. The reversal of 15768904536064 is 46063540986751.

The square root of 15768904536064 is 3971008.

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

It is a super-2 number, since 2×15768904536064² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15768904535987 and 15768904536005.

It is not an unprimeable number, because it can be changed into a prime (15768904536061) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 254113489 + ... + 254175535.

Almost surely, 2^{15768904536064} is an apocalyptic number.

15768904536064 is the 3971008-th square number.

It is an amenable number.

15768904536064 is a deficient number, since it is larger than the sum of its proper divisors (15765562941023).

15768904536064 is an frugal number, since it uses more digits than its factorization.

15768904536064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124118 (or 62049 counting only the distinct ones).

The product of its (nonzero) digits is 130636800, while the sum is 64.

15768904536064 divided by its sum of digits (64) gives a square (246389133376 = 496376²).

The spelling of 15768904536064 in words is "fifteen trillion, seven hundred sixty-eight billion, nine hundred four million, five hundred thirty-six thousand, sixty-four".