26091568464 has 80 divisors (see below), whose sum is σ = 72786508032. Its totient is φ = 8006229504.

The previous prime is 26091568463. The next prime is 26091568471. The reversal of 26091568464 is 46486519062.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26091568463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172042 + ... + 285974.

Almost surely, 2^26091568464 is an apocalyptic number.

26091568464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26091568464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36393254016).

26091568464 is an abundant number, since it is smaller than the sum of its proper divisors (46694939568).

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

26091568464 is a wasteful number, since it uses less digits than its factorization.

26091568464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114324 (or 114318 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 26091568464 in words is "twenty-six billion, ninety-one million, five hundred sixty-eight thousand, four hundred sixty-four".