27081089790 has 64 divisors (see below), whose sum is σ = 66070736640. Its totient is φ = 7102402560.

The previous prime is 27081089773. The next prime is 27081089797. The reversal of 27081089790 is 9798018072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27081089797) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1277901 + ... + 1298919.

It is an arithmetic number, because the mean of its divisors is an integer number (1032355260).

Almost surely, 2^27081089790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27081089790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33035368320).

27081089790 is an abundant number, since it is smaller than the sum of its proper divisors (38989646850).

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

27081089790 is a wasteful number, since it uses less digits than its factorization.

27081089790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21737.

The product of its (nonzero) digits is 508032, while the sum is 51.

The spelling of 27081089790 in words is "twenty-seven billion, eighty-one million, eighty-nine thousand, seven hundred ninety".