56640550360 has 32 divisors (see below), whose sum is σ = 134937783360. Its totient is φ = 21323501056.

The previous prime is 56640550339. The next prime is 56640550367. The reversal of 56640550360 is 6305504665.

It is a happy number.

It is a super-4 number, since 4×56640550360⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56640550367) 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, 41646784 + ... + 41648143.

It is an arithmetic number, because the mean of its divisors is an integer number (4216805730).

Almost surely, 2^56640550360 is an apocalyptic number.

It is an amenable number.

56640550360 is an abundant number, since it is smaller than the sum of its proper divisors (78297233000).

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

56640550360 is a wasteful number, since it uses less digits than its factorization.

56640550360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83294955 (or 83294951 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 56640550360 in words is "fifty-six billion, six hundred forty million, five hundred fifty thousand, three hundred sixty".