27117479971648 has 56 divisors (see below), whose sum is σ = 60134966043264. Its totient is φ = 12025489996800.

The previous prime is 27117479971643. The next prime is 27117479971651. The reversal of 27117479971648 is 84617997471172.

It is a super-3 number, since 3×27117479971648³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27117479971643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469716840 + ... + 469774567.

It is an arithmetic number, because the mean of its divisors is an integer number (1073838679344).

Almost surely, 2^{27117479971648} is an apocalyptic number.

It is an amenable number.

27117479971648 is an abundant number, since it is smaller than the sum of its proper divisors (33017486071616).

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

27117479971648 is a wasteful number, since it uses less digits than its factorization.

27117479971648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939491471 (or 939491461 counting only the distinct ones).

The product of its digits is 298722816, while the sum is 73.

The spelling of 27117479971648 in words is "twenty-seven trillion, one hundred seventeen billion, four hundred seventy-nine million, nine hundred seventy-one thousand, six hundred forty-eight".