68171048631 has 32 divisors (see below), whose sum is σ = 115797946880. Its totient is φ = 38827963008.

The previous prime is 68171048609. The next prime is 68171048641. The reversal of 68171048631 is 13684017186.

68171048631 is a `hidden beast` number, since 6 + 8 + 1 + 7 + 1 + 0 + 4 + 8 + 631 = 666.

It is not a de Polignac number, because 68171048631 - 2⁶ = 68171048567 is a prime.

It is a super-2 number, since 2×68171048631² (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 (68171048641) 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, 529426 + ... + 645471.

It is an arithmetic number, because the mean of its divisors is an integer number (3618685840).

Almost surely, 2^68171048631 is an apocalyptic number.

68171048631 is a deficient number, since it is larger than the sum of its proper divisors (47626898249).

68171048631 is a wasteful number, since it uses less digits than its factorization.

68171048631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175220 (or 1175214 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 68171048631 in words is "sixty-eight billion, one hundred seventy-one million, forty-eight thousand, six hundred thirty-one".