631454381245463 has 4 divisors (see below), whose sum is σ = 631454455759920. Its totient is φ = 631454306731008.

The previous prime is 631454381245459. The next prime is 631454381245487. The reversal of 631454381245463 is 364542183454136.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 631454381245463 - 2² = 631454381245459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631454381245663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22632203 + ... + 42132236.

It is an arithmetic number, because the mean of its divisors is an integer number (157863613939980).

Almost surely, 2^{631454381245463} is an apocalyptic number.

631454381245463 is a deficient number, since it is larger than the sum of its proper divisors (74514457).

631454381245463 is an equidigital number, since it uses as much as digits as its factorization.

631454381245463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74514456.

The product of its digits is 99532800, while the sum is 59.

The spelling of 631454381245463 in words is "six hundred thirty-one trillion, four hundred fifty-four billion, three hundred eighty-one million, two hundred forty-five thousand, four hundred sixty-three".