27999377412 has 24 divisors (see below), whose sum is σ = 65342704896. Its totient is φ = 9331579488.

The previous prime is 27999377389. The next prime is 27999377429. The reversal of 27999377412 is 21477399972.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116628 + ... + 263819.

It is an arithmetic number, because the mean of its divisors is an integer number (2722612704).

Almost surely, 2^27999377412 is an apocalyptic number.

It is an amenable number.

27999377412 is an abundant number, since it is smaller than the sum of its proper divisors (37343327484).

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

27999377412 is a wasteful number, since it uses less digits than its factorization.

27999377412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386587 (or 386585 counting only the distinct ones).

The product of its digits is 12002256, while the sum is 60.

The spelling of 27999377412 in words is "twenty-seven billion, nine hundred ninety-nine million, three hundred seventy-seven thousand, four hundred twelve".