27290539908990 has 320 divisors, whose sum is σ = 76401272692800. Its totient is φ = 6981275879424.

The previous prime is 27290539908941. The next prime is 27290539908991. The reversal of 27290539908990 is 9980993509272.

27290539908990 is a `hidden beast` number, since 2 + 7 + 2 + 9 + 0 + 539 + 9 + 0 + 89 + 9 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27290539908991) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 6967202512 + ... + 6967206428.

It is an arithmetic number, because the mean of its divisors is an integer number (238753977165).

Almost surely, 2^{27290539908990} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27290539908990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38200636346400).

27290539908990 is an abundant number, since it is smaller than the sum of its proper divisors (49110732783810).

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

27290539908990 is a wasteful number, since it uses less digits than its factorization.

27290539908990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5801 (or 5792 counting only the distinct ones).

The product of its (nonzero) digits is 198404640, while the sum is 72.

The spelling of 27290539908990 in words is "twenty-seven trillion, two hundred ninety billion, five hundred thirty-nine million, nine hundred eight thousand, nine hundred ninety".