503776128218868 has 18 divisors (see below), whose sum is σ = 1273434101886674. Its totient is φ = 167925376072944.

The previous prime is 503776128218863. The next prime is 503776128218917. The reversal of 503776128218868 is 868812821677305.

503776128218868 is a `hidden beast` number, since 5 + 0 + 377 + 6 + 12 + 8 + 2 + 188 + 68 = 666.

It can be written as a sum of positive squares in only one way, i.e., 447372753811344 + 56403374407524 = 21151188^2 + 7510218^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×503776128218868² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 503776128218796 and 503776128218805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503776128218863) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6996890669671 + ... + 6996890669742.

Almost surely, 2^{503776128218868} is an apocalyptic number.

It is an amenable number.

503776128218868 is an abundant number, since it is smaller than the sum of its proper divisors (769657973667806).

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

503776128218868 is a wasteful number, since it uses less digits than its factorization.

503776128218868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13993781339423 (or 13993781339418 counting only the distinct ones).

The product of its (nonzero) digits is 433520640, while the sum is 72.

The spelling of 503776128218868 in words is "five hundred three trillion, seven hundred seventy-six billion, one hundred twenty-eight million, two hundred eighteen thousand, eight hundred sixty-eight".