27687739392 has 168 divisors, whose sum is σ = 80638960896. Its totient is φ = 9153478656.

The previous prime is 27687739363. The next prime is 27687739399. The reversal of 27687739392 is 29393778672.

It is a super-2 number, since 2×27687739392² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27687739399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9361978 + ... + 9364934.

Almost surely, 2^27687739392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27687739392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40319480448).

27687739392 is an abundant number, since it is smaller than the sum of its proper divisors (52951221504).

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

27687739392 is a wasteful number, since it uses less digits than its factorization.

27687739392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116 (or 3089 counting only the distinct ones).

The product of its digits is 48009024, while the sum is 63.

The spelling of 27687739392 in words is "twenty-seven billion, six hundred eighty-seven million, seven hundred thirty-nine thousand, three hundred ninety-two".