27687689821098 has 32 divisors (see below), whose sum is σ = 61528508745600. Its totient is φ = 9229183568928.

The previous prime is 27687689821093. The next prime is 27687689821159. The reversal of 27687689821098 is 89012898678672.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27687689821093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10558515 + ... + 12917337.

It is an arithmetic number, because the mean of its divisors is an integer number (1922765898300).

Almost surely, 2^{27687689821098} is an apocalyptic number.

27687689821098 is an abundant number, since it is smaller than the sum of its proper divisors (33840818924502).

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

27687689821098 is a wasteful number, since it uses less digits than its factorization.

27687689821098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576203 (or 2576197 counting only the distinct ones).

The product of its (nonzero) digits is 2341011456, while the sum is 81.

The spelling of 27687689821098 in words is "twenty-seven trillion, six hundred eighty-seven billion, six hundred eighty-nine million, eight hundred twenty-one thousand, ninety-eight".