27898372158 has 8 divisors (see below), whose sum is σ = 55796744328. Its totient is φ = 9299457384.

The previous prime is 27898372133. The next prime is 27898372181. The reversal of 27898372158 is 85127389872.

It is a sphenic number, since it is the product of 3 distinct primes.

27898372158 is an admirable number.

It is a congruent number.

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, 2324864341 + ... + 2324864352.

It is an arithmetic number, because the mean of its divisors is an integer number (6974593041).

Almost surely, 2^27898372158 is an apocalyptic number.

27898372158 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

27898372158 is a wasteful number, since it uses less digits than its factorization.

27898372158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4649728698.

The product of its digits is 13547520, while the sum is 60.

The spelling of 27898372158 in words is "twenty-seven billion, eight hundred ninety-eight million, three hundred seventy-two thousand, one hundred fifty-eight".