27640111580 has 12 divisors (see below), whose sum is σ = 58044234360. Its totient is φ = 11056044624.

The previous prime is 27640111579. The next prime is 27640111621. The reversal of 27640111580 is 8511104672.

It is a self number, because there is not a number n which added to its sum of digits gives 27640111580.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691002770 + ... + 691002809.

It is an arithmetic number, because the mean of its divisors is an integer number (4837019530).

Almost surely, 2^27640111580 is an apocalyptic number.

27640111580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27640111580 is an abundant number, since it is smaller than the sum of its proper divisors (30404122780).

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

27640111580 is a wasteful number, since it uses less digits than its factorization.

27640111580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382005588 (or 1382005586 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The spelling of 27640111580 in words is "twenty-seven billion, six hundred forty million, one hundred eleven thousand, five hundred eighty".