27897022116 has 36 divisors (see below), whose sum is σ = 70552617772. Its totient is φ = 9294372864.

The previous prime is 27897022079. The next prime is 27897022157. The reversal of 27897022116 is 61122079872.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11996820900 + 15900201216 = 109530^2 + 126096^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 119485 + ... + 264708.

Almost surely, 2^27897022116 is an apocalyptic number.

It is an amenable number.

27897022116 is an abundant number, since it is smaller than the sum of its proper divisors (42655595656).

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

27897022116 is a wasteful number, since it uses less digits than its factorization.

27897022116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386220 (or 386215 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 27897022116 in words is "twenty-seven billion, eight hundred ninety-seven million, twenty-two thousand, one hundred sixteen".