27507969660 has 96 divisors (see below), whose sum is σ = 79603679232. Its totient is φ = 7090191360.

The previous prime is 27507969659. The next prime is 27507969707. The reversal of 27507969660 is 6696970572.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 27507969660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1596612 + ... + 1613748.

It is an arithmetic number, because the mean of its divisors is an integer number (829204992).

Almost surely, 2^27507969660 is an apocalyptic number.

27507969660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27507969660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39801839616).

27507969660 is an abundant number, since it is smaller than the sum of its proper divisors (52095709572).

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

27507969660 is a wasteful number, since it uses less digits than its factorization.

27507969660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18043 (or 18041 counting only the distinct ones).

The product of its (nonzero) digits is 8573040, while the sum is 57.

The spelling of 27507969660 in words is "twenty-seven billion, five hundred seven million, nine hundred sixty-nine thousand, six hundred sixty".