57015878538 has 8 divisors (see below), whose sum is σ = 114031757088. Its totient is φ = 19005292844.

The previous prime is 57015878431. The next prime is 57015878551. The reversal of 57015878538 is 83587851075.

It is a sphenic number, since it is the product of 3 distinct primes.

57015878538 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4751323206 + ... + 4751323217.

It is an arithmetic number, because the mean of its divisors is an integer number (14253969636).

Almost surely, 2^57015878538 is an apocalyptic number.

57015878538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

57015878538 is a wasteful number, since it uses less digits than its factorization.

57015878538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9502646428.

The product of its (nonzero) digits is 9408000, while the sum is 57.

The spelling of 57015878538 in words is "fifty-seven billion, fifteen million, eight hundred seventy-eight thousand, five hundred thirty-eight".