56623404351 has 12 divisors (see below), whose sum is σ = 77294476248. Its totient is φ = 36871050384.

The previous prime is 56623404349. The next prime is 56623404359. The reversal of 56623404351 is 15340432665.

It is not a de Polignac number, because 56623404351 - 2¹ = 56623404349 is a prime.

It is a super-3 number, since 3×56623404351³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56623404359) 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 11 ways as a sum of consecutive naturals, for example, 5098420 + ... + 5109513.

It is an arithmetic number, because the mean of its divisors is an integer number (6441206354).

Almost surely, 2^56623404351 is an apocalyptic number.

56623404351 is a deficient number, since it is larger than the sum of its proper divisors (20671071897).

56623404351 is a wasteful number, since it uses less digits than its factorization.

56623404351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10208022 (or 10207979 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 56623404351 in words is "fifty-six billion, six hundred twenty-three million, four hundred four thousand, three hundred fifty-one".