27880444134 has 48 divisors (see below), whose sum is σ = 62661493440. Its totient is φ = 9291027240.

The previous prime is 27880444093. The next prime is 27880444147. The reversal of 27880444134 is 43144408872.

27880444134 is a `hidden beast` number, since 2 + 78 + 8 + 0 + 444 + 134 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27880444134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3621229 + ... + 3628919.

It is an arithmetic number, because the mean of its divisors is an integer number (1305447780).

Almost surely, 2^27880444134 is an apocalyptic number.

27880444134 is an abundant number, since it is smaller than the sum of its proper divisors (34781049306).

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

27880444134 is an equidigital number, since it uses as much as digits as its factorization.

27880444134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15167 (or 15155 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 45.

The spelling of 27880444134 in words is "twenty-seven billion, eight hundred eighty million, four hundred forty-four thousand, one hundred thirty-four".