505666269870 has 32 divisors (see below), whose sum is σ = 1213642219680. Its totient is φ = 134839541760.

The previous prime is 505666269863. The next prime is 505666269893. The reversal of 505666269870 is 78962666505.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602050 + ... + 1172090.

It is an arithmetic number, because the mean of its divisors is an integer number (37926319365).

Almost surely, 2^505666269870 is an apocalyptic number.

505666269870 is an abundant number, since it is smaller than the sum of its proper divisors (707975949810).

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

505666269870 is a wasteful number, since it uses less digits than its factorization.

505666269870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599620.

The product of its (nonzero) digits is 32659200, while the sum is 60.

The spelling of 505666269870 in words is "five hundred five billion, six hundred sixty-six million, two hundred sixty-nine thousand, eight hundred seventy".