27111371664 has 40 divisors (see below), whose sum is σ = 75425228032. Its totient is φ = 8341960320.

The previous prime is 27111371587. The next prime is 27111371701. The reversal of 27111371664 is 46617311172.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21723232 + ... + 21724479.

Almost surely, 2^27111371664 is an apocalyptic number.

27111371664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27111371664 is an abundant number, since it is smaller than the sum of its proper divisors (48313856368).

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

27111371664 is a wasteful number, since it uses less digits than its factorization.

27111371664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43447735 (or 43447729 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The spelling of 27111371664 in words is "twenty-seven billion, one hundred eleven million, three hundred seventy-one thousand, six hundred sixty-four".