557608128722 has 18 divisors (see below), whose sum is σ = 839112181029. Its totient is φ = 277906960080.

The previous prime is 557608128691. The next prime is 557608128767. The reversal of 557608128722 is 227821806755.

It can be written as a sum of positive squares in 2 ways, for example, as 435205409401 + 122402719321 = 659701^2 + 349861^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=528019.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 431918897 + ... + 431920187.

Almost surely, 2^557608128722 is an apocalyptic number.

557608128722 is a deficient number, since it is larger than the sum of its proper divisors (281504052307).

557608128722 is an frugal number, since it uses more digits than its factorization.

557608128722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3402 (or 1702 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 53.

The spelling of 557608128722 in words is "five hundred fifty-seven billion, six hundred eight million, one hundred twenty-eight thousand, seven hundred twenty-two".