56554989907 has 16 divisors (see below), whose sum is σ = 61368659968. Its totient is φ = 51808183200.

The previous prime is 56554989833. The next prime is 56554989919. The reversal of 56554989907 is 70998945565.

56554989907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 56554989907 - 2¹¹ = 56554987859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56554989977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2073118 + ... + 2100220.

It is an arithmetic number, because the mean of its divisors is an integer number (3835541248).

Almost surely, 2^56554989907 is an apocalyptic number.

56554989907 is a deficient number, since it is larger than the sum of its proper divisors (4813670061).

56554989907 is a wasteful number, since it uses less digits than its factorization.

56554989907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28330.

The product of its (nonzero) digits is 122472000, while the sum is 67.

The spelling of 56554989907 in words is "fifty-six billion, five hundred fifty-four million, nine hundred eighty-nine thousand, nine hundred seven".