27140136678 has 96 divisors (see below), whose sum is σ = 61463001600. Its totient is φ = 8644563648.

The previous prime is 27140136677. The next prime is 27140136679. The reversal of 27140136678 is 87663104172.

It is an interprime number because it is at equal distance from previous prime (27140136677) and next prime (27140136679).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27140136677) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26120883 + ... + 26121921.

It is an arithmetic number, because the mean of its divisors is an integer number (640239600).

Almost surely, 2^27140136678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27140136678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30731500800).

27140136678 is an abundant number, since it is smaller than the sum of its proper divisors (34322864922).

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

27140136678 is a wasteful number, since it uses less digits than its factorization.

27140136678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546 (or 1543 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 27140136678 in words is "twenty-seven billion, one hundred forty million, one hundred thirty-six thousand, six hundred seventy-eight".