27977648895 has 48 divisors (see below), whose sum is σ = 55444147200. Its totient is φ = 12784761792.

The previous prime is 27977648861. The next prime is 27977648911. The reversal of 27977648895 is 59884677972.

27977648895 is a `hidden beast` number, since 2 + 79 + 7 + 76 + 488 + 9 + 5 = 666.

It is not a de Polignac number, because 27977648895 - 2¹⁵ = 27977616127 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 855556 + ... + 887654.

It is an arithmetic number, because the mean of its divisors is an integer number (1155086400).

Almost surely, 2^27977648895 is an apocalyptic number.

27977648895 is a deficient number, since it is larger than the sum of its proper divisors (27466498305).

27977648895 is a wasteful number, since it uses less digits than its factorization.

27977648895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34884 (or 34881 counting only the distinct ones).

The product of its digits is 426746880, while the sum is 72.

The spelling of 27977648895 in words is "twenty-seven billion, nine hundred seventy-seven million, six hundred forty-eight thousand, eight hundred ninety-five".