56511444404022 has 64 divisors (see below), whose sum is σ = 118303097702400. Its totient is φ = 17962213699584.

The previous prime is 56511444404021. The next prime is 56511444404069. The reversal of 56511444404022 is 22040444411565.

It is a happy number.

56511444404022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56511444404021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 355644963 + ... + 355803825.

It is an arithmetic number, because the mean of its divisors is an integer number (1848485901600).

Almost surely, 2^{56511444404022} is an apocalyptic number.

56511444404022 is an abundant number, since it is smaller than the sum of its proper divisors (61791653298378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56511444404022 is a wasteful number, since it uses less digits than its factorization.

56511444404022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166877.

The product of its (nonzero) digits is 614400, while the sum is 42.

Adding to 56511444404022 its reverse (22040444411565), we get a palindrome (78551888815587).

The spelling of 56511444404022 in words is "fifty-six trillion, five hundred eleven billion, four hundred forty-four million, four hundred four thousand, twenty-two".