27013878198 has 48 divisors (see below), whose sum is σ = 60779090736. Its totient is φ = 8664641280.

The previous prime is 27013878193. The next prime is 27013878209. The reversal of 27013878198 is 89187831072.

It is a happy number.

27013878198 is a `hidden beast` number, since 2 + 70 + 1 + 387 + 8 + 198 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27013878193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196840 + ... + 304587.

It is an arithmetic number, because the mean of its divisors is an integer number (1266231057).

Almost surely, 2^27013878198 is an apocalyptic number.

27013878198 is an abundant number, since it is smaller than the sum of its proper divisors (33765212538).

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

27013878198 is a wasteful number, since it uses less digits than its factorization.

27013878198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501549 (or 501546 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 54.

The spelling of 27013878198 in words is "twenty-seven billion, thirteen million, eight hundred seventy-eight thousand, one hundred ninety-eight".