27689378112 has 168 divisors, whose sum is σ = 87556360320. Its totient is φ = 8296273920.

The previous prime is 27689378071. The next prime is 27689378131. The reversal of 27689378112 is 21187398672.

It is a happy number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 539353 + ... + 588455.

Almost surely, 2^27689378112 is an apocalyptic number.

27689378112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27689378112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43778180160).

27689378112 is an abundant number, since it is smaller than the sum of its proper divisors (59866982208).

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

27689378112 is a wasteful number, since it uses less digits than its factorization.

27689378112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49221 (or 49208 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The spelling of 27689378112 in words is "twenty-seven billion, six hundred eighty-nine million, three hundred seventy-eight thousand, one hundred twelve".