56756486640 has 160 divisors (see below), whose sum is σ = 201536672256. Its totient is φ = 12943457280.

The previous prime is 56756486597. The next prime is 56756486729. The reversal of 56756486640 is 4668465765.

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 31 ways as a sum of consecutive naturals, for example, 706110 + ... + 782370.

Almost surely, 2^56756486640 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 56756486640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100768336128).

56756486640 is an abundant number, since it is smaller than the sum of its proper divisors (144780185616).

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

56756486640 is a wasteful number, since it uses less digits than its factorization.

56756486640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76727 (or 76721 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 57.

The spelling of 56756486640 in words is "fifty-six billion, seven hundred fifty-six million, four hundred eighty-six thousand, six hundred forty".