56555104243631 has 64 divisors (see below), whose sum is σ = 67111649280000. Its totient is φ = 46667860791552.

The previous prime is 56555104243619. The next prime is 56555104243661. The reversal of 56555104243631 is 13634240155565.

It is not a de Polignac number, because 56555104243631 - 2¹⁸ = 56555103981487 is a prime.

It is a super-2 number, since 2×56555104243631² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56555104243631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56555104243661) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1211551550 + ... + 1211598228.

It is an arithmetic number, because the mean of its divisors is an integer number (1048619520000).

Almost surely, 2^{56555104243631} is an apocalyptic number.

56555104243631 is a deficient number, since it is larger than the sum of its proper divisors (10556545036369).

56555104243631 is a wasteful number, since it uses less digits than its factorization.

56555104243631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47196.

The product of its (nonzero) digits is 6480000, while the sum is 50.

The spelling of 56555104243631 in words is "fifty-six trillion, five hundred fifty-five billion, one hundred four million, two hundred forty-three thousand, six hundred thirty-one".