27980537130 has 640 divisors, whose sum is σ = 96793804800. Its totient is φ = 5761082880.

The previous prime is 27980537113. The next prime is 27980537141. The reversal of 27980537130 is 3173508972.

It is a happy number.

27980537130 is a `hidden beast` number, since 2 + 7 + 9 + 80 + 537 + 1 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 220319127 + ... + 220319253.

It is an arithmetic number, because the mean of its divisors is an integer number (151240320).

Almost surely, 2^27980537130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27980537130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48396902400).

27980537130 is an abundant number, since it is smaller than the sum of its proper divisors (68813267670).

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

27980537130 is a wasteful number, since it uses less digits than its factorization.

27980537130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The spelling of 27980537130 in words is "twenty-seven billion, nine hundred eighty million, five hundred thirty-seven thousand, one hundred thirty".