27912532872 has 192 divisors, whose sum is σ = 82611385920. Its totient is φ = 7834724352.

The previous prime is 27912532867. The next prime is 27912532919. The reversal of 27912532872 is 27823521972.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29788788 + ... + 29789724.

It is an arithmetic number, because the mean of its divisors is an integer number (430267635).

Almost surely, 2^27912532872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27912532872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41305692960).

27912532872 is an abundant number, since it is smaller than the sum of its proper divisors (54698853048).

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

27912532872 is a wasteful number, since it uses less digits than its factorization.

27912532872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380 (or 1369 counting only the distinct ones).

The product of its digits is 846720, while the sum is 48.

The spelling of 27912532872 in words is "twenty-seven billion, nine hundred twelve million, five hundred thirty-two thousand, eight hundred seventy-two".