26117328280 has 16 divisors (see below), whose sum is σ = 58763988720. Its totient is φ = 10446931296.

The previous prime is 26117328271. The next prime is 26117328301. The reversal of 26117328280 is 8282371162.

It is a happy number.

It is a super-2 number, since 2×26117328280² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 652933207 = 26117328280 / (2 + 6 + 1 + 1 + 7 + 3 + 2 + 8 + 2 + 8 + 0).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326466564 + ... + 326466643.

It is an arithmetic number, because the mean of its divisors is an integer number (3672749295).

Almost surely, 2^26117328280 is an apocalyptic number.

26117328280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26117328280 is an abundant number, since it is smaller than the sum of its proper divisors (32646660440).

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

26117328280 is a wasteful number, since it uses less digits than its factorization.

26117328280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652933218 (or 652933214 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 26117328280 in words is "twenty-six billion, one hundred seventeen million, three hundred twenty-eight thousand, two hundred eighty".