8155534864 has 45 divisors (see below), whose sum is σ = 16026357711. Its totient is φ = 4020512160.

The previous prime is 8155534859. The next prime is 8155534883. The reversal of 8155534864 is 4684355518.

The square root of 8155534864 is 90308.

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

It is a Duffinian number.

Its product of digits (2304000) is a multiple of the sum of its prime divisors (320).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 38651719 + ... + 38651929.

Almost surely, 2^8155534864 is an apocalyptic number.

8155534864 is the 90308-th square number.

It is an amenable number.

8155534864 is a deficient number, since it is larger than the sum of its proper divisors (7870822847).

8155534864 is an equidigital number, since it uses as much as digits as its factorization.

8155534864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 320 counting only the distinct ones).

The product of its digits is 2304000, while the sum is 49.

The cubic root of 8155534864 is about 2012.8781374715.

Multiplying 8155534864 by its sum of digits (49), we get a square (399621208336 = 632156²).

The spelling of 8155534864 in words is "eight billion, one hundred fifty-five million, five hundred thirty-four thousand, eight hundred sixty-four".