26616751231 has 4 divisors (see below), whose sum is σ = 30419144272. Its totient is φ = 22814358192.

The previous prime is 26616751207. The next prime is 26616751247. The reversal of 26616751231 is 13215761662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13215761662 = 2 ⋅6607880831.

It is a cyclic number.

It is not a de Polignac number, because 26616751231 - 2¹⁵ = 26616718463 is a prime.

It is a super-2 number, since 2×26616751231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26616751631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1901196510 + ... + 1901196523.

It is an arithmetic number, because the mean of its divisors is an integer number (7604786068).

Almost surely, 2^26616751231 is an apocalyptic number.

26616751231 is a deficient number, since it is larger than the sum of its proper divisors (3802393041).

26616751231 is an equidigital number, since it uses as much as digits as its factorization.

26616751231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3802393040.

The product of its digits is 90720, while the sum is 40.

The spelling of 26616751231 in words is "twenty-six billion, six hundred sixteen million, seven hundred fifty-one thousand, two hundred thirty-one".