6657295872 has 160 divisors (see below), whose sum is σ = 18203834880. Its totient is φ = 2161336320.

The previous prime is 6657295831. The next prime is 6657295891. The reversal of 6657295872 is 2785927566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10071222 + ... + 10071882.

It is an arithmetic number, because the mean of its divisors is an integer number (113773968).

Almost surely, 2^6657295872 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 6657295872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9101917440).

6657295872 is an abundant number, since it is smaller than the sum of its proper divisors (11546539008).

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

6657295872 is an equidigital number, since it uses as much as digits as its factorization.

6657295872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844 (or 828 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 57.

The square root of 6657295872 is about 81592.2537499731. The cubic root of 6657295872 is about 1881.1898187287.

The spelling of 6657295872 in words is "six billion, six hundred fifty-seven million, two hundred ninety-five thousand, eight hundred seventy-two".