505579255994 has 24 divisors (see below), whose sum is σ = 802166886900. Its totient is φ = 238951383552.

The previous prime is 505579255991. The next prime is 505579256041. The reversal of 505579255994 is 499552975505.

It can be written as a sum of positive squares in 2 ways, for example, as 505573615369 + 5640625 = 711037^2 + 2375^2 .

It is a super-2 number, since 2×505579255994² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 505579255994.

It is not an unprimeable number, because it can be changed into a prime (505579255991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 455609 + ... + 1103964.

Almost surely, 2^505579255994 is an apocalyptic number.

505579255994 is a deficient number, since it is larger than the sum of its proper divisors (296587630906).

505579255994 is a wasteful number, since it uses less digits than its factorization.

505579255994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560062 (or 1560043 counting only the distinct ones).

The product of its (nonzero) digits is 127575000, while the sum is 65.

The spelling of 505579255994 in words is "five hundred five billion, five hundred seventy-nine million, two hundred fifty-five thousand, nine hundred ninety-four".