27805836612 has 12 divisors (see below), whose sum is σ = 64880285456. Its totient is φ = 9268612200.

The previous prime is 27805836587. The next prime is 27805836623. The reversal of 27805836612 is 21663850872.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1158576514 + ... + 1158576537.

Almost surely, 2^27805836612 is an apocalyptic number.

It is an amenable number.

27805836612 is an abundant number, since it is smaller than the sum of its proper divisors (37074448844).

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

27805836612 is a wasteful number, since it uses less digits than its factorization.

27805836612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2317153058 (or 2317153056 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 27805836612 in words is "twenty-seven billion, eight hundred five million, eight hundred thirty-six thousand, six hundred twelve".