36640639131 has 8 divisors (see below), whose sum is σ = 50430127104. Its totient is φ = 23639121960.

The previous prime is 36640639117. The next prime is 36640639153. The reversal of 36640639131 is 13193604663.

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

It is not a de Polignac number, because 36640639131 - 2²⁷ = 36506421403 is a prime.

It is a super-2 number, since 2×36640639131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (36640639171) 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, 196992591 + ... + 196992776.

It is an arithmetic number, because the mean of its divisors is an integer number (6303765888).

Almost surely, 2^36640639131 is an apocalyptic number.

36640639131 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

36640639131 is a deficient number, since it is larger than the sum of its proper divisors (13789487973).

36640639131 is a wasteful number, since it uses less digits than its factorization.

36640639131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393985401.

The product of its (nonzero) digits is 209952, while the sum is 42.

The spelling of 36640639131 in words is "thirty-six billion, six hundred forty million, six hundred thirty-nine thousand, one hundred thirty-one".