67604237161631 has 32 divisors (see below), whose sum is σ = 73026906624000. Its totient is φ = 62395290348768.

The previous prime is 67604237161621. The next prime is 67604237161661. The reversal of 67604237161631 is 13616173240676.

It is a cyclic number.

It is not a de Polignac number, because 67604237161631 - 2²⁶ = 67604170052767 is a prime.

It is a super-2 number, since 2×67604237161631² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67604237161621) 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, 33014216 + ... + 35002098.

It is an arithmetic number, because the mean of its divisors is an integer number (2282090832000).

Almost surely, 2^{67604237161631} is an apocalyptic number.

67604237161631 is a deficient number, since it is larger than the sum of its proper divisors (5422669462369).

67604237161631 is a wasteful number, since it uses less digits than its factorization.

67604237161631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988283.

The product of its (nonzero) digits is 4572288, while the sum is 53.

The spelling of 67604237161631 in words is "sixty-seven trillion, six hundred four billion, two hundred thirty-seven million, one hundred sixty-one thousand, six hundred thirty-one".