27198089172 has 48 divisors (see below), whose sum is σ = 71479524480. Its totient is φ = 8941834944.

The previous prime is 27198089161. The next prime is 27198089173.

27198089172 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27198089173) 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, 1717008 + ... + 1732775.

It is an arithmetic number, because the mean of its divisors is an integer number (1489156760).

Almost surely, 2^27198089172 is an apocalyptic number.

It is an amenable number.

27198089172 is an abundant number, since it is smaller than the sum of its proper divisors (44281435308).

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

27198089172 is a wasteful number, since it uses less digits than its factorization.

27198089172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449869 (or 3449861 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 54.

The spelling of 27198089172 in words is "twenty-seven billion, one hundred ninety-eight million, eighty-nine thousand, one hundred seventy-two".