27688681374 has 16 divisors (see below), whose sum is σ = 55409786640. Its totient is φ = 9224156480.

The previous prime is 27688681373. The next prime is 27688681381. The reversal of 27688681374 is 47318688672.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27688681373) 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, 1339887 + ... + 1360394.

It is an arithmetic number, because the mean of its divisors is an integer number (3463111665).

Almost surely, 2^27688681374 is an apocalyptic number.

27688681374 is an abundant number, since it is smaller than the sum of its proper divisors (27721105266).

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

27688681374 is a wasteful number, since it uses less digits than its factorization.

27688681374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2701995.

The product of its digits is 21676032, while the sum is 60.

The spelling of 27688681374 in words is "twenty-seven billion, six hundred eighty-eight million, six hundred eighty-one thousand, three hundred seventy-four".