56631670532447 has 4 divisors (see below), whose sum is σ = 59093917077360. Its totient is φ = 54169423987536.

The previous prime is 56631670532441. The next prime is 56631670532461. The reversal of 56631670532447 is 74423507613665.

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 56631670532447 - 2¹² = 56631670528351 is a prime.

It is a super-2 number, since 2×56631670532447² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56631670532441) 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, 1231123272422 + ... + 1231123272467.

It is an arithmetic number, because the mean of its divisors is an integer number (14773479269340).

Almost surely, 2^{56631670532447} is an apocalyptic number.

56631670532447 is a deficient number, since it is larger than the sum of its proper divisors (2462246544913).

56631670532447 is a wasteful number, since it uses less digits than its factorization.

56631670532447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462246544912.

The product of its (nonzero) digits is 76204800, while the sum is 59.

The spelling of 56631670532447 in words is "fifty-six trillion, six hundred thirty-one billion, six hundred seventy million, five hundred thirty-two thousand, four hundred forty-seven".