557794477890 has 48 divisors (see below), whose sum is σ = 1561824541368. Its totient is φ = 137303255808.

The previous prime is 557794477829. The next prime is 557794477927. The reversal of 557794477890 is 98774497755.

557794477890 is a `hidden beast` number, since 5 + 5 + 7 + 79 + 4 + 477 + 89 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 192377854881 + 365416623009 = 438609^2 + 604497^2 .

It is a super-2 number, since 2×557794477890² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238372539 + ... + 238374878.

Almost surely, 2^557794477890 is an apocalyptic number.

557794477890 is an abundant number, since it is smaller than the sum of its proper divisors (1004030063478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

557794477890 is a wasteful number, since it uses less digits than its factorization.

557794477890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476747443 (or 476747440 counting only the distinct ones).

The product of its (nonzero) digits is 622339200, while the sum is 72.

The spelling of 557794477890 in words is "five hundred fifty-seven billion, seven hundred ninety-four million, four hundred seventy-seven thousand, eight hundred ninety".