56319526920 has 128 divisors (see below), whose sum is σ = 172993011840. Its totient is φ = 14660352000.

The previous prime is 56319526891. The next prime is 56319526931. The reversal of 56319526920 is 2962591365.

It is a happy number.

It is a super-2 number, since 2×56319526920² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56319526920.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15483342 + ... + 15486978.

It is an arithmetic number, because the mean of its divisors is an integer number (1351507905).

Almost surely, 2^56319526920 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 56319526920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86496505920).

56319526920 is an abundant number, since it is smaller than the sum of its proper divisors (116673484920).

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

56319526920 is a wasteful number, since it uses less digits than its factorization.

56319526920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6695 (or 6691 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 48.

The spelling of 56319526920 in words is "fifty-six billion, three hundred nineteen million, five hundred twenty-six thousand, nine hundred twenty".