631402265045461 has 32 divisors (see below), whose sum is σ = 786482234818560. Its totient is φ = 493546460831424.

The previous prime is 631402265045459. The next prime is 631402265045473. The reversal of 631402265045461 is 164540562204136.

It is not a de Polignac number, because 631402265045461 - 2¹ = 631402265045459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631402265045261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 736585836 + ... + 737442538.

It is an arithmetic number, because the mean of its divisors is an integer number (24577569838080).

Almost surely, 2^{631402265045461} is an apocalyptic number.

It is an amenable number.

631402265045461 is a deficient number, since it is larger than the sum of its proper divisors (155079969773099).

631402265045461 is a wasteful number, since it uses less digits than its factorization.

631402265045461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954385.

The product of its (nonzero) digits is 4147200, while the sum is 49.

The spelling of 631402265045461 in words is "six hundred thirty-one trillion, four hundred two billion, two hundred sixty-five million, forty-five thousand, four hundred sixty-one".