56554728647 has 8 divisors (see below), whose sum is σ = 56686268352. Its totient is φ = 56423340000.

The previous prime is 56554728619. The next prime is 56554728661. The reversal of 56554728647 is 74682745565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56554728647 - 2²² = 56550534343 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 (56554728667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729893 + ... + 803649.

It is an arithmetic number, because the mean of its divisors is an integer number (7085783544).

Almost surely, 2^56554728647 is an apocalyptic number.

56554728647 is a deficient number, since it is larger than the sum of its proper divisors (131539705).

56554728647 is a wasteful number, since it uses less digits than its factorization.

56554728647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75529.

The product of its digits is 56448000, while the sum is 59.

The spelling of 56554728647 in words is "fifty-six billion, five hundred fifty-four million, seven hundred twenty-eight thousand, six hundred forty-seven".