505886137812 has 108 divisors (see below), whose sum is σ = 1421381887380. Its totient is φ = 151576254720.

The previous prime is 505886137807. The next prime is 505886137831. The reversal of 505886137812 is 218731688505.

505886137812 is a `hidden beast` number, since 5 + 0 + 5 + 8 + 8 + 613 + 7 + 8 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 352914412356 + 152971725456 = 594066^2 + 391116^2 .

It is a super-2 number, since 2×505886137812² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 264763 + ... + 1040130.

Almost surely, 2^505886137812 is an apocalyptic number.

It is an amenable number.

505886137812 is an abundant number, since it is smaller than the sum of its proper divisors (915495749568).

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

505886137812 is a wasteful number, since it uses less digits than its factorization.

505886137812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305014 (or 1304998 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The spelling of 505886137812 in words is "five hundred five billion, eight hundred eighty-six million, one hundred thirty-seven thousand, eight hundred twelve".