56503939440 has 160 divisors (see below), whose sum is σ = 189253886976. Its totient is φ = 13863121920.

The previous prime is 56503939439. The next prime is 56503939477. The reversal of 56503939440 is 4493930565.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 56503939440.

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 31 ways as a sum of consecutive naturals, for example, 928345 + ... + 987335.

Almost surely, 2^56503939440 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 56503939440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94626943488).

56503939440 is an abundant number, since it is smaller than the sum of its proper divisors (132749947536).

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

56503939440 is a wasteful number, since it uses less digits than its factorization.

56503939440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59327 (or 59321 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 48.

The spelling of 56503939440 in words is "fifty-six billion, five hundred three million, nine hundred thirty-nine thousand, four hundred forty".