557765516645 has 8 divisors (see below), whose sum is σ = 669837881880. Its totient is φ = 445866238720.

The previous prime is 557765516587. The next prime is 557765516647. The reversal of 557765516645 is 546615567755.

It can be written as a sum of positive squares in 4 ways, for example, as 33007259041 + 524758257604 = 181679^2 + 724402^2 .

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

It is not a de Polignac number, because 557765516645 - 2⁸ = 557765516389 is a prime.

It is a super-2 number, since 2×557765516645² (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 (557765516647) 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, 43264736 + ... + 43277625.

It is an arithmetic number, because the mean of its divisors is an integer number (83729735235).

Almost surely, 2^557765516645 is an apocalyptic number.

It is an amenable number.

557765516645 is a deficient number, since it is larger than the sum of its proper divisors (112072365235).

557765516645 is a wasteful number, since it uses less digits than its factorization.

557765516645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86543655.

The product of its digits is 132300000, while the sum is 62.

The spelling of 557765516645 in words is "five hundred fifty-seven billion, seven hundred sixty-five million, five hundred sixteen thousand, six hundred forty-five".