57380009391 has 32 divisors (see below), whose sum is σ = 88748574720. Its totient is φ = 36571515552.

The previous prime is 57380009381. The next prime is 57380009429. The reversal of 57380009391 is 19390008375.

It is a happy number.

It is not a de Polignac number, because 57380009391 - 2⁵ = 57380009359 is a prime.

It is a super-2 number, since 2×57380009391² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57380009381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1252410 + ... + 1297416.

It is an arithmetic number, because the mean of its divisors is an integer number (2773392960).

Almost surely, 2^57380009391 is an apocalyptic number.

57380009391 is a deficient number, since it is larger than the sum of its proper divisors (31368565329).

57380009391 is a wasteful number, since it uses less digits than its factorization.

57380009391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47092 (or 47086 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The spelling of 57380009391 in words is "fifty-seven billion, three hundred eighty million, nine thousand, three hundred ninety-one".