631424046645 has 24 divisors (see below), whose sum is σ = 1250820969216. Its totient is φ = 288650992608.

The previous prime is 631424046607. The next prime is 631424046661. The reversal of 631424046645 is 546640424136.

631424046645 is a `hidden beast` number, since 6 + 3 + 142 + 4 + 0 + 466 + 45 = 666.

It is not a de Polignac number, because 631424046645 - 2⁶ = 631424046581 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 631424046645.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1002260077 + ... + 1002260706.

It is an arithmetic number, because the mean of its divisors is an integer number (52117540384).

Almost surely, 2^631424046645 is an apocalyptic number.

It is an amenable number.

631424046645 is a deficient number, since it is larger than the sum of its proper divisors (619396922571).

631424046645 is a wasteful number, since it uses less digits than its factorization.

631424046645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004520801 (or 2004520798 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 45.

The spelling of 631424046645 in words is "six hundred thirty-one billion, four hundred twenty-four million, forty-six thousand, six hundred forty-five".