56503755406503 has 6 divisors (see below), whose sum is σ = 81616535587184. Its totient is φ = 37669170270996.

The previous prime is 56503755406471. The next prime is 56503755406559. The reversal of 56503755406503 is 30560455730565.

It is a happy number.

56503755406503 is a `hidden beast` number, since 5 + 6 + 5 + 0 + 37 + 5 + 540 + 65 + 0 + 3 = 666.

It is not a de Polignac number, because 56503755406503 - 2⁵ = 56503755406471 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56503755406503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56503755406303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3139097522575 + ... + 3139097522592.

Almost surely, 2^{56503755406503} is an apocalyptic number.

56503755406503 is a deficient number, since it is larger than the sum of its proper divisors (25112780180681).

56503755406503 is a wasteful number, since it uses less digits than its factorization.

56503755406503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6278195045173 (or 6278195045170 counting only the distinct ones).

The product of its (nonzero) digits is 28350000, while the sum is 54.

The spelling of 56503755406503 in words is "fifty-six trillion, five hundred three billion, seven hundred fifty-five million, four hundred six thousand, five hundred three".