505996604278 has 72 divisors (see below), whose sum is σ = 887929019352. Its totient is φ = 216202219200.

The previous prime is 505996604203. The next prime is 505996604357. The reversal of 505996604278 is 872406699505.

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, 623916493 + ... + 623917303.

It is an arithmetic number, because the mean of its divisors is an integer number (12332347491).

Almost surely, 2^505996604278 is an apocalyptic number.

505996604278 is a deficient number, since it is larger than the sum of its proper divisors (381932415074).

505996604278 is an frugal number, since it uses more digits than its factorization.

505996604278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691 (or 841 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 61.

The spelling of 505996604278 in words is "five hundred five billion, nine hundred ninety-six million, six hundred four thousand, two hundred seventy-eight".