56002777920 has 280 divisors, whose sum is σ = 202024171008. Its totient is φ = 14723251200.

The previous prime is 56002777903. The next prime is 56002777921. The reversal of 56002777920 is 2977720065.

It is a super-2 number, since 2×56002777920² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56002777921) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1825105 + ... + 1855535.

Almost surely, 2^56002777920 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 56002777920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101012085504).

56002777920 is an abundant number, since it is smaller than the sum of its proper divisors (146021393088).

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

56002777920 is a wasteful number, since it uses less digits than its factorization.

56002777920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30531 (or 30512 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The spelling of 56002777920 in words is "fifty-six billion, two million, seven hundred seventy-seven thousand, nine hundred twenty".