27380700180 has 72 divisors (see below), whose sum is σ = 83142462312. Its totient is φ = 7293812736.

The previous prime is 27380700163. The next prime is 27380700187. The reversal of 27380700180 is 8100708372.

It can be written as a sum of positive squares in 4 ways, for example, as 315843984 + 27064856196 = 17772^2 + 164514^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27380700187) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91732 + ... + 251348.

It is an arithmetic number, because the mean of its divisors is an integer number (1154756421).

Almost surely, 2^27380700180 is an apocalyptic number.

27380700180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27380700180 is an abundant number, since it is smaller than the sum of its proper divisors (55761762132).

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

27380700180 is a wasteful number, since it uses less digits than its factorization.

27380700180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160585 (or 160580 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The spelling of 27380700180 in words is "twenty-seven billion, three hundred eighty million, seven hundred thousand, one hundred eighty".