56039805780 has 96 divisors (see below), whose sum is σ = 179687424000. Its totient is φ = 12783381120.

The previous prime is 56039805727. The next prime is 56039805817. The reversal of 56039805780 is 8750893065.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75885 + ... + 343275.

It is an arithmetic number, because the mean of its divisors is an integer number (1871744000).

Almost surely, 2^56039805780 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 56039805780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89843712000).

56039805780 is an abundant number, since it is smaller than the sum of its proper divisors (123647618220).

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

56039805780 is a wasteful number, since it uses less digits than its factorization.

56039805780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267909 (or 267907 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 56039805780 in words is "fifty-six billion, thirty-nine million, eight hundred five thousand, seven hundred eighty".