26309089720 has 32 divisors (see below), whose sum is σ = 59216572800. Its totient is φ = 10519881088.

The previous prime is 26309089673. The next prime is 26309089757. The reversal of 26309089720 is 2798090362.

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, 2440 + ... + 229399.

It is an arithmetic number, because the mean of its divisors is an integer number (1850517900).

Almost surely, 2^26309089720 is an apocalyptic number.

26309089720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26309089720 is an abundant number, since it is smaller than the sum of its proper divisors (32907483080).

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

26309089720 is a wasteful number, since it uses less digits than its factorization.

26309089720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234687 (or 234683 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 26309089720 in words is "twenty-six billion, three hundred nine million, eighty-nine thousand, seven hundred twenty".