505231051988 has 72 divisors (see below), whose sum is σ = 971424316800. Its totient is φ = 229778954496.

The previous prime is 505231051933. The next prime is 505231052003. The reversal of 505231051988 is 889150132505.

It is a super-5 number, since 5×505231051988⁵ (a number of 60 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27921248 + ... + 27939336.

It is an arithmetic number, because the mean of its divisors is an integer number (13492004400).

Almost surely, 2^505231051988 is an apocalyptic number.

It is an amenable number.

505231051988 is a deficient number, since it is larger than the sum of its proper divisors (466193264812).

505231051988 is a wasteful number, since it uses less digits than its factorization.

505231051988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18721 (or 18706 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 47.

The spelling of 505231051988 in words is "five hundred five billion, two hundred thirty-one million, fifty-one thousand, nine hundred eighty-eight".