631633664511422 has 4 divisors (see below), whose sum is σ = 947450496767136. Its totient is φ = 315816832255710.

The previous prime is 631633664511413. The next prime is 631633664511481. The reversal of 631633664511422 is 224115466336136.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×631633664511422² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157908416127854 + ... + 157908416127857.

It is an arithmetic number, because the mean of its divisors is an integer number (236862624191784).

Almost surely, 2^{631633664511422} is an apocalyptic number.

631633664511422 is a deficient number, since it is larger than the sum of its proper divisors (315816832255714).

631633664511422 is a wasteful number, since it uses less digits than its factorization.

631633664511422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315816832255713.

The product of its digits is 11197440, while the sum is 53.

The spelling of 631633664511422 in words is "six hundred thirty-one trillion, six hundred thirty-three billion, six hundred sixty-four million, five hundred eleven thousand, four hundred twenty-two".