26391228259 has 16 divisors (see below), whose sum is σ = 29397302784. Its totient is φ = 23488264800.

The previous prime is 26391228257. The next prime is 26391228277. The reversal of 26391228259 is 95282219362.

It is a happy number.

It is not a de Polignac number, because 26391228259 - 2¹ = 26391228257 is a prime.

It is a super-3 number, since 3×26391228259³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26391228257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221044 + ... + 318814.

It is an arithmetic number, because the mean of its divisors is an integer number (1837331424).

Almost surely, 2^26391228259 is an apocalyptic number.

26391228259 is a deficient number, since it is larger than the sum of its proper divisors (3006074525).

26391228259 is a wasteful number, since it uses less digits than its factorization.

26391228259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98298.

The product of its digits is 933120, while the sum is 49.

The spelling of 26391228259 in words is "twenty-six billion, three hundred ninety-one million, two hundred twenty-eight thousand, two hundred fifty-nine".