27923720580 has 144 divisors (see below), whose sum is σ = 99925023744. Its totient is φ = 6176666880.

The previous prime is 27923720579. The next prime is 27923720639. The reversal of 27923720580 is 8502732972.

27923720580 is a `hidden beast` number, since 27 + 9 + 23 + 7 + 20 + 580 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 318387 + ... + 396506.

It is an arithmetic number, because the mean of its divisors is an integer number (693923776).

Almost surely, 2^27923720580 is an apocalyptic number.

27923720580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27923720580 is an abundant number, since it is smaller than the sum of its proper divisors (72001303164).

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

27923720580 is a wasteful number, since it uses less digits than its factorization.

27923720580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714946 (or 714941 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 27923720580 in words is "twenty-seven billion, nine hundred twenty-three million, seven hundred twenty thousand, five hundred eighty".