56245536640 has 64 divisors (see below), whose sum is σ = 134565948000. Its totient is φ = 22480820224.

The previous prime is 56245536629. The next prime is 56245536667. The reversal of 56245536640 is 4663554265.

It is a tau number, because it is divible by the number of its divisors (64).

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 7 ways as a sum of consecutive naturals, for example, 810846 + ... + 877474.

Almost surely, 2^56245536640 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 56245536640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67282974000).

56245536640 is an abundant number, since it is smaller than the sum of its proper divisors (78320411360).

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

56245536640 is a wasteful number, since it uses less digits than its factorization.

56245536640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67967 (or 67955 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 46.

The spelling of 56245536640 in words is "fifty-six billion, two hundred forty-five million, five hundred thirty-six thousand, six hundred forty".