57172073128 has 32 divisors (see below), whose sum is σ = 112366013760. Its totient is φ = 27240232320.

The previous prime is 57172073117. The next prime is 57172073129. The reversal of 57172073128 is 82137027175.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (57172073129) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2012700 + ... + 2040907.

It is an arithmetic number, because the mean of its divisors is an integer number (3511437930).

Almost surely, 2^57172073128 is an apocalyptic number.

It is an amenable number.

57172073128 is a deficient number, since it is larger than the sum of its proper divisors (55193940632).

57172073128 is a wasteful number, since it uses less digits than its factorization.

57172073128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4053697 (or 4053693 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 43.

The spelling of 57172073128 in words is "fifty-seven billion, one hundred seventy-two million, seventy-three thousand, one hundred twenty-eight".