57166542785 has 32 divisors (see below), whose sum is σ = 75637711872. Its totient is φ = 41131442880.

The previous prime is 57166542773. The next prime is 57166542791. The reversal of 57166542785 is 58724566175.

It is not a de Polignac number, because 57166542785 - 2⁸ = 57166542529 is a prime.

It is a super-2 number, since 2×57166542785² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57166542785.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4625324 + ... + 4637666.

It is an arithmetic number, because the mean of its divisors is an integer number (2363678496).

Almost surely, 2^57166542785 is an apocalyptic number.

57166542785 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

57166542785 is a deficient number, since it is larger than the sum of its proper divisors (18471169087).

57166542785 is a wasteful number, since it uses less digits than its factorization.

57166542785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13253.

The product of its digits is 14112000, while the sum is 56.

The spelling of 57166542785 in words is "fifty-seven billion, one hundred sixty-six million, five hundred forty-two thousand, seven hundred eighty-five".