27818374807920 has 40 divisors (see below), whose sum is σ = 86236961905296. Its totient is φ = 7418233282048.

The previous prime is 27818374807901. The next prime is 27818374807943. The reversal of 27818374807920 is 2970847381872.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent 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, 57954947277 + ... + 57954947756.

Almost surely, 2^{27818374807920} is an apocalyptic number.

27818374807920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27818374807920 is an abundant number, since it is smaller than the sum of its proper divisors (58418587097376).

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

27818374807920 is a wasteful number, since it uses less digits than its factorization.

27818374807920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115909895049 (or 115909895043 counting only the distinct ones).

The product of its (nonzero) digits is 75866112, while the sum is 66.

The spelling of 27818374807920 in words is "twenty-seven trillion, eight hundred eighteen billion, three hundred seventy-four million, eight hundred seven thousand, nine hundred twenty".