688843001301631 has 32 divisors (see below), whose sum is σ = 799317481536000. Its totient is φ = 587037965690880.

The previous prime is 688843001301617. The next prime is 688843001301701. The reversal of 688843001301631 is 136103100348886.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-688843001301631 is a prime.

It is a super-2 number, since 2×688843001301631² (a number of 30 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 (688843001301131) 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, 107349726 + ... + 113585428.

It is an arithmetic number, because the mean of its divisors is an integer number (24978671298000).

Almost surely, 2^{688843001301631} is an apocalyptic number.

688843001301631 is a deficient number, since it is larger than the sum of its proper divisors (110474480234369).

688843001301631 is a wasteful number, since it uses less digits than its factorization.

688843001301631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6241279.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 688843001301631 in words is "six hundred eighty-eight trillion, eight hundred forty-three billion, one million, three hundred one thousand, six hundred thirty-one".