7902543568 has 40 divisors (see below), whose sum is σ = 16281544968. Its totient is φ = 3702853632.

The previous prime is 7902543511. The next prime is 7902543581. The reversal of 7902543568 is 8653452097.

It can be written as a sum of positive squares in 4 ways, for example, as 408524944 + 7494018624 = 20212^2 + 86568^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1030 + ... + 125722.

Almost surely, 2^7902543568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7902543568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8140772484).

7902543568 is an abundant number, since it is smaller than the sum of its proper divisors (8379001400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7902543568 is a wasteful number, since it uses less digits than its factorization.

7902543568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124951 (or 124945 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 49.

The square root of 7902543568 is about 88896.2517095069. The cubic root of 7902543568 is about 1991.8454273268.

The spelling of 7902543568 in words is "seven billion, nine hundred two million, five hundred forty-three thousand, five hundred sixty-eight".