631977451083 has 48 divisors (see below), whose sum is σ = 1002752974080. Its totient is φ = 380360664000.

The previous prime is 631977451081. The next prime is 631977451099. The reversal of 631977451083 is 380154779136.

631977451083 is a `hidden beast` number, since 6 + 31 + 97 + 7 + 4 + 510 + 8 + 3 = 666.

It is not a de Polignac number, because 631977451083 - 2¹ = 631977451081 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (631977451081) 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 47 ways as a sum of consecutive naturals, for example, 79360260 + ... + 79368222.

It is an arithmetic number, because the mean of its divisors is an integer number (20890686960).

Almost surely, 2^631977451083 is an apocalyptic number.

631977451083 is a deficient number, since it is larger than the sum of its proper divisors (370775522997).

631977451083 is a wasteful number, since it uses less digits than its factorization.

631977451083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13440 (or 13437 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 631977451083 in words is "six hundred thirty-one billion, nine hundred seventy-seven million, four hundred fifty-one thousand, eighty-three".