56578649344 has 72 divisors (see below), whose sum is σ = 129379803840. Its totient is φ = 24189800448.

The previous prime is 56578649341. The next prime is 56578649359. The reversal of 56578649344 is 44394687565.

It is a super-2 number, since 2×56578649344² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56578649341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713172 + ... + 788524.

It is an arithmetic number, because the mean of its divisors is an integer number (1796941720).

Almost surely, 2^56578649344 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 56578649344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64689901920).

56578649344 is an abundant number, since it is smaller than the sum of its proper divisors (72801154496).

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

56578649344 is an equidigital number, since it uses as much as digits as its factorization.

56578649344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75795 (or 75781 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 61.

The spelling of 56578649344 in words is "fifty-six billion, five hundred seventy-eight million, six hundred forty-nine thousand, three hundred forty-four".