56416506402503 has 4 divisors (see below), whose sum is σ = 60756237664248. Its totient is φ = 52076775140760.

The previous prime is 56416506402497. The next prime is 56416506402511. The reversal of 56416506402503 is 30520460561465.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56416506402503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56416506402593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2169865630853 + ... + 2169865630878.

It is an arithmetic number, because the mean of its divisors is an integer number (15189059416062).

Almost surely, 2^{56416506402503} is an apocalyptic number.

56416506402503 is a deficient number, since it is larger than the sum of its proper divisors (4339731261745).

56416506402503 is a wasteful number, since it uses less digits than its factorization.

56416506402503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4339731261744.

The product of its (nonzero) digits is 2592000, while the sum is 47.

Adding to 56416506402503 its reverse (30520460561465), we get a palindrome (86936966963968).

The spelling of 56416506402503 in words is "fifty-six trillion, four hundred sixteen billion, five hundred six million, four hundred two thousand, five hundred three".