631872369216 has 189 divisors, whose sum is σ = 1991427431539. Its totient is φ = 191412883200.

The previous prime is 631872369211. The next prime is 631872369251. The reversal of 631872369216 is 612963278136.

The square root of 631872369216 is 794904.

It is a perfect power (a square), and thus also a powerful number.

631872369216 is a `hidden beast` number, since 6 + 318 + 7 + 236 + 92 + 1 + 6 = 666.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631872369211) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 209853151 + ... + 209856161.

Almost surely, 2^631872369216 is an apocalyptic number.

631872369216 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

631872369216 is the 794904-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631872369216

631872369216 is an abundant number, since it is smaller than the sum of its proper divisors (1359555062323).

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

631872369216 is an equidigital number, since it uses as much as digits as its factorization.

631872369216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6062 (or 3027 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The spelling of 631872369216 in words is "six hundred thirty-one billion, eight hundred seventy-two million, three hundred sixty-nine thousand, two hundred sixteen".