27156844865172 has 48 divisors (see below), whose sum is σ = 69540445481472. Its totient is φ = 8180069395680.

The previous prime is 27156844865167. The next prime is 27156844865233.

27156844865172 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615947038 + ... + 615991125.

It is an arithmetic number, because the mean of its divisors is an integer number (1448759280864).

Almost surely, 2^{27156844865172} is an apocalyptic number.

27156844865172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27156844865172 is an abundant number, since it is smaller than the sum of its proper divisors (42383600616300).

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

27156844865172 is a wasteful number, since it uses less digits than its factorization.

27156844865172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231938348 (or 1231938346 counting only the distinct ones).

The product of its digits is 180633600, while the sum is 66.

The spelling of 27156844865172 in words is "twenty-seven trillion, one hundred fifty-six billion, eight hundred forty-four million, eight hundred sixty-five thousand, one hundred seventy-two".