26001097789680 has 400 divisors, whose sum is σ = 97848945495840. Its totient is φ = 6361001404416.

The previous prime is 26001097789651. The next prime is 26001097789687. The reversal of 26001097789680 is 8698779010062.

26001097789680 is a `hidden beast` number, since 2 + 600 + 10 + 9 + 7 + 7 + 8 + 9 + 6 + 8 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26001097789687) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 12784326 + ... + 14677914.

Almost surely, 2^{26001097789680} is an apocalyptic number.

26001097789680 is a gapful number since it is divisible by the number (20) 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 26001097789680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48924472747920).

26001097789680 is an abundant number, since it is smaller than the sum of its proper divisors (71847847706160).

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

26001097789680 is a wasteful number, since it uses less digits than its factorization.

26001097789680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893790 (or 1893775 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The spelling of 26001097789680 in words is "twenty-six trillion, one billion, ninety-seven million, seven hundred eighty-nine thousand, six hundred eighty".