26397917230280 has 64 divisors (see below), whose sum is σ = 62000602444080. Its totient is φ = 10105361280000.

The previous prime is 26397917230213. The next prime is 26397917230309. The reversal of 26397917230280 is 8203271979362.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 8162574708484 + 18235342521796 = 2857022^2 + 4270286^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146109971 + ... + 146290530.

Almost surely, 2^{26397917230280} is an apocalyptic number.

26397917230280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26397917230280 is an abundant number, since it is smaller than the sum of its proper divisors (35602685213800).

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

26397917230280 is a wasteful number, since it uses less digits than its factorization.

26397917230280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292400610 (or 292400606 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 59.

The spelling of 26397917230280 in words is "twenty-six trillion, three hundred ninety-seven billion, nine hundred seventeen million, two hundred thirty thousand, two hundred eighty".