27399991696 has 240 divisors, whose sum is σ = 69366595968. Its totient is φ = 10363852800.

The previous prime is 27399991693. The next prime is 27399991753. The reversal of 27399991696 is 69619999372.

It is not an unprimeable number, because it can be changed into a prime (27399991693) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44697886 + ... + 44698498.

Almost surely, 2^27399991696 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 27399991696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34683297984).

27399991696 is an abundant number, since it is smaller than the sum of its proper divisors (41966604272).

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

27399991696 is a wasteful number, since it uses less digits than its factorization.

27399991696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790 (or 777 counting only the distinct ones).

The product of its digits is 89282088, while the sum is 70.

The spelling of 27399991696 in words is "twenty-seven billion, three hundred ninety-nine million, nine hundred ninety-one thousand, six hundred ninety-six".