642414633631 has 16 divisors (see below), whose sum is σ = 651439134720. Its totient is φ = 633465275040.

The previous prime is 642414633617. The next prime is 642414633659. The reversal of 642414633631 is 136336414246.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-642414633631 is a prime.

It is a super-2 number, since 2×642414633631² (a number of 24 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 (642414633031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13293210 + ... + 13341448.

It is an arithmetic number, because the mean of its divisors is an integer number (40714945920).

Almost surely, 2^642414633631 is an apocalyptic number.

642414633631 is a deficient number, since it is larger than the sum of its proper divisors (9024501089).

642414633631 is a wasteful number, since it uses less digits than its factorization.

642414633631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49014.

The product of its digits is 746496, while the sum is 43.

The spelling of 642414633631 in words is "six hundred forty-two billion, four hundred fourteen million, six hundred thirty-three thousand, six hundred thirty-one".