505479865830 has 64 divisors (see below), whose sum is σ = 1239630137856. Its totient is φ = 131881568000.

The previous prime is 505479865711. The next prime is 505479865843. The reversal of 505479865830 is 38568974505.

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, 626751 + ... + 1184810.

It is an arithmetic number, because the mean of its divisors is an integer number (19369220904).

Almost surely, 2^505479865830 is an apocalyptic number.

505479865830 is an abundant number, since it is smaller than the sum of its proper divisors (734150272026).

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

505479865830 is a wasteful number, since it uses less digits than its factorization.

505479865830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811773.

The product of its (nonzero) digits is 36288000, while the sum is 60.

The spelling of 505479865830 in words is "five hundred five billion, four hundred seventy-nine million, eight hundred sixty-five thousand, eight hundred thirty".