68009169631 has 8 divisors (see below), whose sum is σ = 73320353120. Its totient is φ = 62709373152.

The previous prime is 68009169629. The next prime is 68009169643. The reversal of 68009169631 is 13696190086.

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

It is a cyclic number.

It is not a de Polignac number, because 68009169631 - 2¹ = 68009169629 is a prime.

It is a super-2 number, since 2×68009169631² (a number of 22 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 (68009160631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2834340 + ... + 2858233.

It is an arithmetic number, because the mean of its divisors is an integer number (9165044140).

Almost surely, 2^68009169631 is an apocalyptic number.

68009169631 is a deficient number, since it is larger than the sum of its proper divisors (5311183489).

68009169631 is a wasteful number, since it uses less digits than its factorization.

68009169631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5693505.

The product of its (nonzero) digits is 419904, while the sum is 49.

The spelling of 68009169631 in words is "sixty-eight billion, nine million, one hundred sixty-nine thousand, six hundred thirty-one".