57132520681 has 4 divisors (see below), whose sum is σ = 57163123792. Its totient is φ = 57101917572.

The previous prime is 57132520667. The next prime is 57132520691. The reversal of 57132520681 is 18602523175.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57132520681 - 2³⁵ = 22772782313 is a prime.

It is a super-2 number, since 2×57132520681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57132520661) 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 3 ways as a sum of consecutive naturals, for example, 15298755 + ... + 15302488.

It is an arithmetic number, because the mean of its divisors is an integer number (14290780948).

Almost surely, 2^57132520681 is an apocalyptic number.

It is an amenable number.

57132520681 is a deficient number, since it is larger than the sum of its proper divisors (30603111).

57132520681 is a wasteful number, since it uses less digits than its factorization.

57132520681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30603110.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 57132520681 in words is "fifty-seven billion, one hundred thirty-two million, five hundred twenty thousand, six hundred eighty-one".