26123965686 has 96 divisors (see below), whose sum is σ = 70067350080. Its totient is φ = 6849937152.

The previous prime is 26123965667. The next prime is 26123965723. The reversal of 26123965686 is 68656932162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 237280 + ... + 329468.

It is an arithmetic number, because the mean of its divisors is an integer number (729868230).

Almost surely, 2^26123965686 is an apocalyptic number.

26123965686 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 26123965686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35033675040).

26123965686 is an abundant number, since it is smaller than the sum of its proper divisors (43943384394).

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

26123965686 is a wasteful number, since it uses less digits than its factorization.

26123965686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92390 (or 92387 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The spelling of 26123965686 in words is "twenty-six billion, one hundred twenty-three million, nine hundred sixty-five thousand, six hundred eighty-six".