27999805853824 has 32 divisors (see below), whose sum is σ = 63749557972800. Its totient is φ = 11999916794112.

The previous prime is 27999805853693. The next prime is 27999805853843. The reversal of 27999805853824 is 42835850899972.

It is a tau number, because it is divible by the number of its divisors (32).

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, 15624890764 + ... + 15624892555.

It is an arithmetic number, because the mean of its divisors is an integer number (1992173686650).

Almost surely, 2^{27999805853824} is an apocalyptic number.

It is an amenable number.

27999805853824 is an abundant number, since it is smaller than the sum of its proper divisors (35749752118976).

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

27999805853824 is an equidigital number, since it uses as much as digits as its factorization.

27999805853824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31249783340 (or 31249783328 counting only the distinct ones).

The product of its (nonzero) digits is 3135283200, while the sum is 79.

The spelling of 27999805853824 in words is "twenty-seven trillion, nine hundred ninety-nine billion, eight hundred five million, eight hundred fifty-three thousand, eight hundred twenty-four".