56820681510 has 128 divisors (see below), whose sum is σ = 149448499200. Its totient is φ = 13763880960.

The previous prime is 56820681503. The next prime is 56820681529. The reversal of 56820681510 is 1518602865.

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 63 ways as a sum of consecutive naturals, for example, 6145471 + ... + 6154709.

It is an arithmetic number, because the mean of its divisors is an integer number (1167566400).

Almost surely, 2^56820681510 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56820681510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74724249600).

56820681510 is an abundant number, since it is smaller than the sum of its proper divisors (92627817690).

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

56820681510 is a wasteful number, since it uses less digits than its factorization.

56820681510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9686.

The product of its (nonzero) digits is 115200, while the sum is 42.

The spelling of 56820681510 in words is "fifty-six billion, eight hundred twenty million, six hundred eighty-one thousand, five hundred ten".