557765516623 has 24 divisors (see below), whose sum is σ = 653952643344. Its totient is φ = 474324480000.

The previous prime is 557765516587. The next prime is 557765516647. The reversal of 557765516623 is 326615567755.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-557765516623 is a prime.

It is a super-2 number, since 2×557765516623² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557765516723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3072613 + ... + 3249073.

It is an arithmetic number, because the mean of its divisors is an integer number (27248026806).

Almost surely, 2^557765516623 is an apocalyptic number.

557765516623 is a deficient number, since it is larger than the sum of its proper divisors (96187126721).

557765516623 is a wasteful number, since it uses less digits than its factorization.

557765516623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176983 (or 176976 counting only the distinct ones).

The product of its digits is 39690000, while the sum is 58.

The spelling of 557765516623 in words is "five hundred fifty-seven billion, seven hundred sixty-five million, five hundred sixteen thousand, six hundred twenty-three".