631695370446 has 144 divisors (see below), whose sum is σ = 1620355726080. Its totient is φ = 177289449120.

The previous prime is 631695370393. The next prime is 631695370469. The reversal of 631695370446 is 644073596136.

631695370446 is a `hidden beast` number, since 6 + 3 + 1 + 69 + 537 + 0 + 4 + 46 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 631695370392 and 631695370401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 81747835 + ... + 81755561.

It is an arithmetic number, because the mean of its divisors is an integer number (11252470320).

Almost surely, 2^631695370446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631695370446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810177863040).

631695370446 is an abundant number, since it is smaller than the sum of its proper divisors (988660355634).

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

631695370446 is a wasteful number, since it uses less digits than its factorization.

631695370446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9379 (or 9369 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 54.

The spelling of 631695370446 in words is "six hundred thirty-one billion, six hundred ninety-five million, three hundred seventy thousand, four hundred forty-six".