631621623015005 has 8 divisors (see below), whose sum is σ = 866223940134912. Its totient is φ = 433111970067408.

The previous prime is 631621623014981. The next prime is 631621623015007. The reversal of 631621623015005 is 500510326126136.

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 631621623015005 - 2¹⁰ = 631621623013981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631621623015007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9023166043037 + ... + 9023166043106.

It is an arithmetic number, because the mean of its divisors is an integer number (108277992516864).

Almost surely, 2^{631621623015005} is an apocalyptic number.

It is an amenable number.

631621623015005 is a deficient number, since it is larger than the sum of its proper divisors (234602317119907).

631621623015005 is a wasteful number, since it uses less digits than its factorization.

631621623015005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18046332086155.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 631621623015005 in words is "six hundred thirty-one trillion, six hundred twenty-one billion, six hundred twenty-three million, fifteen thousand, five".