57156620670 has 96 divisors (see below), whose sum is σ = 150099674400. Its totient is φ = 15089455872.

The previous prime is 57156620663. The next prime is 57156620687. The reversal of 57156620670 is 7602665175.

57156620670 is a `hidden beast` number, since 5 + 7 + 1 + 566 + 20 + 67 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3681444 + ... + 3696936.

It is an arithmetic number, because the mean of its divisors is an integer number (1563538275).

Almost surely, 2^57156620670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57156620670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75049837200).

57156620670 is an abundant number, since it is smaller than the sum of its proper divisors (92943053730).

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

57156620670 is a wasteful number, since it uses less digits than its factorization.

57156620670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15914 (or 15911 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 57156620670 in words is "fifty-seven billion, one hundred fifty-six million, six hundred twenty thousand, six hundred seventy".