57509607891 has 8 divisors (see below), whose sum is σ = 76929248704. Its totient is φ = 38214852840.

The previous prime is 57509607833. The next prime is 57509607893. The reversal of 57509607891 is 19870690575.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57509607891 - 2⁷ = 57509607763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57509607893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31220365 + ... + 31222206.

It is an arithmetic number, because the mean of its divisors is an integer number (9616156088).

Almost surely, 2^57509607891 is an apocalyptic number.

57509607891 is a deficient number, since it is larger than the sum of its proper divisors (19419640813).

57509607891 is a wasteful number, since it uses less digits than its factorization.

57509607891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62442881.

The product of its (nonzero) digits is 4762800, while the sum is 57.

The spelling of 57509607891 in words is "fifty-seven billion, five hundred nine million, six hundred seven thousand, eight hundred ninety-one".