56475599544 has 720 divisors, whose sum is σ = 209695008600. Its totient is φ = 14073502464.

The previous prime is 56475599539. The next prime is 56475599549. The reversal of 56475599544 is 44599557465.

It is an interprime number because it is at equal distance from previous prime (56475599539) and next prime (56475599549).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56475599549) by changing a digit.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 149011947 + ... + 149012325.

Almost surely, 2^56475599544 is an apocalyptic number.

56475599544 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56475599544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104847504300).

56475599544 is an abundant number, since it is smaller than the sum of its proper divisors (153219409056).

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

56475599544 is a wasteful number, since it uses less digits than its factorization.

56475599544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 423 counting only the distinct ones).

The product of its digits is 136080000, while the sum is 63.

The spelling of 56475599544 in words is "fifty-six billion, four hundred seventy-five million, five hundred ninety-nine thousand, five hundred forty-four".