557380158721 has 4 divisors (see below), whose sum is σ = 560268139012. Its totient is φ = 554492178432.

The previous prime is 557380158719. The next prime is 557380158743. The reversal of 557380158721 is 127851083755.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 115507538496 + 441872620225 = 339864^2 + 664735^2 .

It is a cyclic number.

It is not a de Polignac number, because 557380158721 - 2¹ = 557380158719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557380758721) 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, 1443989856 + ... + 1443990241.

It is an arithmetic number, because the mean of its divisors is an integer number (140067034753).

Almost surely, 2^557380158721 is an apocalyptic number.

It is an amenable number.

557380158721 is a deficient number, since it is larger than the sum of its proper divisors (2887980291).

557380158721 is a wasteful number, since it uses less digits than its factorization.

557380158721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887980290.

The product of its (nonzero) digits is 2352000, while the sum is 52.

The spelling of 557380158721 in words is "five hundred fifty-seven billion, three hundred eighty million, one hundred fifty-eight thousand, seven hundred twenty-one".