631663604511 has 16 divisors (see below), whose sum is σ = 894830889600. Its totient is φ = 395216968608.

The previous prime is 631663604483. The next prime is 631663604623. The reversal of 631663604511 is 115406366136.

It is not a de Polignac number, because 631663604511 - 2³⁵ = 597303866143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631663604711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51778096 + ... + 51790293.

It is an arithmetic number, because the mean of its divisors is an integer number (55926930600).

Almost surely, 2^631663604511 is an apocalyptic number.

631663604511 is a deficient number, since it is larger than the sum of its proper divisors (263167285089).

631663604511 is a wasteful number, since it uses less digits than its factorization.

631663604511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103568518.

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 631663604511 in words is "six hundred thirty-one billion, six hundred sixty-three million, six hundred four thousand, five hundred eleven".