27108822640 has 20 divisors (see below), whose sum is σ = 63028012824. Its totient is φ = 10843529024.

The previous prime is 27108822617. The next prime is 27108822661. The reversal of 27108822640 is 4622880172.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 27108822593 and 27108822602.

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, 169430062 + ... + 169430221.

Almost surely, 2^27108822640 is an apocalyptic number.

27108822640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27108822640 is an abundant number, since it is smaller than the sum of its proper divisors (35919190184).

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

27108822640 is a wasteful number, since it uses less digits than its factorization.

27108822640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338860296 (or 338860290 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The spelling of 27108822640 in words is "twenty-seven billion, one hundred eight million, eight hundred twenty-two thousand, six hundred forty".