56345602644 has 84 divisors (see below), whose sum is σ = 150263650740. Its totient is φ = 18473909760.

The previous prime is 56345602639. The next prime is 56345602657. The reversal of 56345602644 is 44620654365.

It is a happy number.

56345602644 is a `hidden beast` number, since 5 + 6 + 34 + 5 + 602 + 6 + 4 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4046486544 + 52299116100 = 63612^2 + 228690^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 56345602644.

It is a congruent number.

It is an unprimeable number.

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 27 ways as a sum of consecutive naturals, for example, 19492 + ... + 336260.

It is an arithmetic number, because the mean of its divisors is an integer number (1788852985).

Almost surely, 2^56345602644 is an apocalyptic number.

56345602644 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56345602644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75131825370).

56345602644 is an abundant number, since it is smaller than the sum of its proper divisors (93918048096).

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

56345602644 is a wasteful number, since it uses less digits than its factorization.

56345602644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316852 (or 316835 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 45.

The spelling of 56345602644 in words is "fifty-six billion, three hundred forty-five million, six hundred two thousand, six hundred forty-four".