57387891660 has 48 divisors (see below), whose sum is σ = 175293925632. Its totient is φ = 13912216000.

The previous prime is 57387891607. The next prime is 57387891689. The reversal of 57387891660 is 6619878375.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 57387891594 and 57387891603.

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, 43475016 + ... + 43476335.

It is an arithmetic number, because the mean of its divisors is an integer number (3651956784).

Almost surely, 2^57387891660 is an apocalyptic number.

It is an amenable number.

57387891660 is an abundant number, since it is smaller than the sum of its proper divisors (117906033972).

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

57387891660 is a wasteful number, since it uses less digits than its factorization.

57387891660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86951374 (or 86951372 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 60.

The spelling of 57387891660 in words is "fifty-seven billion, three hundred eighty-seven million, eight hundred ninety-one thousand, six hundred sixty".