557820499855 has 4 divisors (see below), whose sum is σ = 669384599832. Its totient is φ = 446256399880.

The previous prime is 557820499849. The next prime is 557820499871. The reversal of 557820499855 is 558994028755.

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

It is not a de Polignac number, because 557820499855 - 2⁷ = 557820499727 is a prime.

It is a super-2 number, since 2×557820499855² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55782049981 + ... + 55782049990.

It is an arithmetic number, because the mean of its divisors is an integer number (167346149958).

Almost surely, 2^557820499855 is an apocalyptic number.

557820499855 is a deficient number, since it is larger than the sum of its proper divisors (111564099977).

557820499855 is a wasteful number, since it uses less digits than its factorization.

557820499855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111564099976.

The product of its (nonzero) digits is 181440000, while the sum is 67.

The spelling of 557820499855 in words is "five hundred fifty-seven billion, eight hundred twenty million, four hundred ninety-nine thousand, eight hundred fifty-five".