56511557384474 has 8 divisors (see below), whose sum is σ = 86834832078708. Its totient is φ = 27566613358240.

The previous prime is 56511557384473. The next prime is 56511557384497. The reversal of 56511557384474 is 47448375511565.

It can be written as a sum of positive squares in 2 ways, for example, as 44965540753225 + 11546016631249 = 6705635^2 + 3397943^2 .

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

It is a super-2 number, since 2×56511557384474² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56511557384474.

It is not an unprimeable number, because it can be changed into a prime (56511557384473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344582666897 + ... + 344582667060.

Almost surely, 2^{56511557384474} is an apocalyptic number.

56511557384474 is a deficient number, since it is larger than the sum of its proper divisors (30323274694234).

56511557384474 is a wasteful number, since it uses less digits than its factorization.

56511557384474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689165334000.

The product of its digits is 282240000, while the sum is 65.

The spelling of 56511557384474 in words is "fifty-six trillion, five hundred eleven billion, five hundred fifty-seven million, three hundred eighty-four thousand, four hundred seventy-four".