27716081988 has 192 divisors, whose sum is σ = 80176255488. Its totient is φ = 7272529920.

The previous prime is 27716081957. The next prime is 27716081993. The reversal of 27716081988 is 88918061772.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10110298 + ... + 10113038.

It is an arithmetic number, because the mean of its divisors is an integer number (417584664).

Almost surely, 2^27716081988 is an apocalyptic number.

27716081988 is a gapful number since it is divisible by the number (28) 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 27716081988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40088127744).

27716081988 is an abundant number, since it is smaller than the sum of its proper divisors (52460173500).

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

27716081988 is a wasteful number, since it uses less digits than its factorization.

27716081988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2942 (or 2940 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 57.

The spelling of 27716081988 in words is "twenty-seven billion, seven hundred sixteen million, eighty-one thousand, nine hundred eighty-eight".