26491810008 has 32 divisors (see below), whose sum is σ = 66275006400. Its totient is φ = 8824539168.

The previous prime is 26491809973. The next prime is 26491810019. The reversal of 26491810008 is 80001819462.

It is a congruent number.

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, 343266 + ... + 413297.

It is an arithmetic number, because the mean of its divisors is an integer number (2071093950).

Almost surely, 2^26491810008 is an apocalyptic number.

It is an amenable number.

26491810008 is an abundant number, since it is smaller than the sum of its proper divisors (39783196392).

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

26491810008 is a wasteful number, since it uses less digits than its factorization.

26491810008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758031 (or 758027 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The spelling of 26491810008 in words is "twenty-six billion, four hundred ninety-one million, eight hundred ten thousand, eight".