26860869792 has 144 divisors (see below), whose sum is σ = 81211673088. Its totient is φ = 8402634240.

The previous prime is 26860869767. The next prime is 26860869797. The reversal of 26860869792 is 29796806862.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (26860869797) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 312817 + ... + 389327.

It is an arithmetic number, because the mean of its divisors is an integer number (563969952).

Almost surely, 2^26860869792 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 26860869792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40605836544).

26860869792 is an abundant number, since it is smaller than the sum of its proper divisors (54350803296).

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

26860869792 is a wasteful number, since it uses less digits than its factorization.

26860869792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76603 (or 76592 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 26860869792 in words is "twenty-six billion, eight hundred sixty million, eight hundred sixty-nine thousand, seven hundred ninety-two".