56554511640 has 128 divisors (see below), whose sum is σ = 185253004800. Its totient is φ = 13697925120.

The previous prime is 56554511603. The next prime is 56554511641. The reversal of 56554511640 is 4611545565.

56554511640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 56554511592 and 56554511601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56554511641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1503381 + ... + 1540539.

It is an arithmetic number, because the mean of its divisors is an integer number (1447289100).

Almost surely, 2^56554511640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56554511640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92626502400).

56554511640 is an abundant number, since it is smaller than the sum of its proper divisors (128698493160).

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

56554511640 is a wasteful number, since it uses less digits than its factorization.

56554511640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38337 (or 38333 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 56554511640 in words is "fifty-six billion, five hundred fifty-four million, five hundred eleven thousand, six hundred forty".