505353166020 has 72 divisors (see below), whose sum is σ = 1533699498240. Its totient is φ = 134690963520.

The previous prime is 505353165959. The next prime is 505353166033. The reversal of 505353166020 is 20661353505.

505353166020 is a `hidden beast` number, since 5 + 0 + 5 + 35 + 3 + 16 + 602 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 379380 + ... + 1074539.

It is an arithmetic number, because the mean of its divisors is an integer number (21301381920).

Almost surely, 2^505353166020 is an apocalyptic number.

It is an amenable number.

505353166020 is an abundant number, since it is smaller than the sum of its proper divisors (1028346332220).

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

505353166020 is a wasteful number, since it uses less digits than its factorization.

505353166020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455865 (or 1455860 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The spelling of 505353166020 in words is "five hundred five billion, three hundred fifty-three million, one hundred sixty-six thousand, twenty".