27684868780 has 24 divisors (see below), whose sum is σ = 58323982752. Its totient is φ = 11038564992.

The previous prime is 27684868777. The next prime is 27684868817. The reversal of 27684868780 is 8786848672.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2204992 + ... + 2217511.

It is an arithmetic number, because the mean of its divisors is an integer number (2430165948).

Almost surely, 2^27684868780 is an apocalyptic number.

27684868780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27684868780 is an abundant number, since it is smaller than the sum of its proper divisors (30639113972).

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

27684868780 is a wasteful number, since it uses less digits than its factorization.

27684868780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4422825 (or 4422823 counting only the distinct ones).

The product of its (nonzero) digits is 57802752, while the sum is 64.

The spelling of 27684868780 in words is "twenty-seven billion, six hundred eighty-four million, eight hundred sixty-eight thousand, seven hundred eighty".