56451776447 has 24 divisors (see below), whose sum is σ = 62965168560. Its totient is φ = 50567158400.

The previous prime is 56451776441. The next prime is 56451776497. The reversal of 56451776447 is 74467715465.

It is not a de Polignac number, because 56451776447 - 2²⁶ = 56384667583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56451776392 and 56451776401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56451776441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3146372 + ... + 3164262.

It is an arithmetic number, because the mean of its divisors is an integer number (2623548690).

Almost surely, 2^56451776447 is an apocalyptic number.

56451776447 is a deficient number, since it is larger than the sum of its proper divisors (6513392113).

56451776447 is a wasteful number, since it uses less digits than its factorization.

56451776447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18295 (or 18284 counting only the distinct ones).

The product of its digits is 19756800, while the sum is 56.

The spelling of 56451776447 in words is "fifty-six billion, four hundred fifty-one million, seven hundred seventy-six thousand, four hundred forty-seven".