631716661300 has 144 divisors (see below), whose sum is σ = 1405811046640. Its totient is φ = 246343680000.

The previous prime is 631716661271. The next prime is 631716661349. The reversal of 631716661300 is 3166617136.

It can be written as a sum of positive squares in 24 ways, for example, as 600975351076 + 30741310224 = 775226^2 + 175332^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 191369650 + ... + 191372950.

Almost surely, 2^631716661300 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 631716661300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (702905523320).

631716661300 is an abundant number, since it is smaller than the sum of its proper divisors (774094385340).

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

631716661300 is a wasteful number, since it uses less digits than its factorization.

631716661300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3702 (or 3695 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 40.

The spelling of 631716661300 in words is "six hundred thirty-one billion, seven hundred sixteen million, six hundred sixty-one thousand, three hundred".