53639408931 has 8 divisors (see below), whose sum is σ = 72586663104. Its totient is φ = 35225880360.

The previous prime is 53639408923. The next prime is 53639408993. The reversal of 53639408931 is 13980493635.

It is a happy number.

53639408931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 53639408931 - 2³ = 53639408923 is a prime.

It is a super-2 number, since 2×53639408931² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53639408731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133431165 + ... + 133431566.

It is an arithmetic number, because the mean of its divisors is an integer number (9073332888).

Almost surely, 2^53639408931 is an apocalyptic number.

53639408931 is a deficient number, since it is larger than the sum of its proper divisors (18947254173).

53639408931 is a wasteful number, since it uses less digits than its factorization.

53639408931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266862801.

The product of its (nonzero) digits is 2099520, while the sum is 51.

The spelling of 53639408931 in words is "fifty-three billion, six hundred thirty-nine million, four hundred eight thousand, nine hundred thirty-one".