26490262688 has 48 divisors (see below), whose sum is σ = 56236602240. Its totient is φ = 12241958400.

The previous prime is 26490262679. The next prime is 26490262753. The reversal of 26490262688 is 88626209462.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506408 + ... + 556263.

It is an arithmetic number, because the mean of its divisors is an integer number (1171595880).

Almost surely, 2^26490262688 is an apocalyptic number.

It is an amenable number.

26490262688 is an abundant number, since it is smaller than the sum of its proper divisors (29746339552).

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

26490262688 is a wasteful number, since it uses less digits than its factorization.

26490262688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062741 (or 1062733 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 53.

The spelling of 26490262688 in words is "twenty-six billion, four hundred ninety million, two hundred sixty-two thousand, six hundred eighty-eight".