505538402512 has 160 divisors (see below), whose sum is σ = 1204418912256. Its totient is φ = 202271731200.

The previous prime is 505538402491. The next prime is 505538402531. The reversal of 505538402512 is 215204835505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17404033 + ... + 17433055.

Almost surely, 2^505538402512 is an apocalyptic number.

505538402512 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505538402512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (602209456128).

505538402512 is an abundant number, since it is smaller than the sum of its proper divisors (698880509744).

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

505538402512 is a wasteful number, since it uses less digits than its factorization.

505538402512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29409 (or 29403 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 40.

The spelling of 505538402512 in words is "five hundred five billion, five hundred thirty-eight million, four hundred two thousand, five hundred twelve".