26927643678 has 64 divisors (see below), whose sum is σ = 58971743040. Its totient is φ = 8147423232.

The previous prime is 26927643637. The next prime is 26927643689. The reversal of 26927643678 is 87634672962.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1176528 + ... + 1199196.

It is an arithmetic number, because the mean of its divisors is an integer number (921433485).

Almost surely, 2^26927643678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26927643678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29485871520).

26927643678 is an abundant number, since it is smaller than the sum of its proper divisors (32044099362).

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

26927643678 is a wasteful number, since it uses less digits than its factorization.

26927643678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22941.

The product of its digits is 36578304, while the sum is 60.

The spelling of 26927643678 in words is "twenty-six billion, nine hundred twenty-seven million, six hundred forty-three thousand, six hundred seventy-eight".