26498709768 has 128 divisors (see below), whose sum is σ = 71229715200. Its totient is φ = 8195506176.

The previous prime is 26498709701. The next prime is 26498709773. The reversal of 26498709768 is 86790789462.

It is a super-2 number, since 2×26498709768² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26498709699 and 26498709708.

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, 2598696 + ... + 2608872.

It is an arithmetic number, because the mean of its divisors is an integer number (556482150).

Almost surely, 2^26498709768 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 26498709768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35614857600).

26498709768 is an abundant number, since it is smaller than the sum of its proper divisors (44731005432).

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

26498709768 is a wasteful number, since it uses less digits than its factorization.

26498709768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10351 (or 10347 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 66.

The spelling of 26498709768 in words is "twenty-six billion, four hundred ninety-eight million, seven hundred nine thousand, seven hundred sixty-eight".