26591245728 has 48 divisors (see below), whose sum is σ = 69831792576. Its totient is φ = 8859968000.

The previous prime is 26591245711. The next prime is 26591245739. The reversal of 26591245728 is 82754219562.

It is a tau number, because it is divible by the number of its divisors (48).

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, 171853 + ... + 287603.

It is an arithmetic number, because the mean of its divisors is an integer number (1454829012).

Almost surely, 2^26591245728 is an apocalyptic number.

It is an amenable number.

26591245728 is an abundant number, since it is smaller than the sum of its proper divisors (43240546848).

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

26591245728 is a wasteful number, since it uses less digits than its factorization.

26591245728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118157 (or 118149 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 51.

The spelling of 26591245728 in words is "twenty-six billion, five hundred ninety-one million, two hundred forty-five thousand, seven hundred twenty-eight".