631632693552 has 160 divisors (see below), whose sum is σ = 1961224568832. Its totient is φ = 171260635392.

The previous prime is 631632693551. The next prime is 631632693553. The reversal of 631632693552 is 255396236136.

It is an interprime number because it is at equal distance from previous prime (631632693551) and next prime (631632693553).

It is a junction number, because it is equal to n+sod(n) for n = 631632693495 and 631632693504.

It is not an unprimeable number, because it can be changed into a prime (631632693551) 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, 659673 + ... + 1303239.

Almost surely, 2^631632693552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631632693552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (980612284416).

631632693552 is an abundant number, since it is smaller than the sum of its proper divisors (1329591875280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631632693552 is a wasteful number, since it uses less digits than its factorization.

631632693552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643735 (or 643729 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 51.

The spelling of 631632693552 in words is "six hundred thirty-one billion, six hundred thirty-two million, six hundred ninety-three thousand, five hundred fifty-two".