27946648128 has 56 divisors (see below), whose sum is σ = 84505344832. Its totient is φ = 7984756224.

The previous prime is 27946648097. The next prime is 27946648183. The reversal of 27946648128 is 82184664972.

It is a tau number, because it is divible by the number of its divisors (56).

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, 10395475 + ... + 10398162.

Almost surely, 2^27946648128 is an apocalyptic number.

27946648128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27946648128 is an abundant number, since it is smaller than the sum of its proper divisors (56558696704).

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

27946648128 is a wasteful number, since it uses less digits than its factorization.

27946648128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20793659 (or 20793649 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 57.

The spelling of 27946648128 in words is "twenty-seven billion, nine hundred forty-six million, six hundred forty-eight thousand, one hundred twenty-eight".