26106685931 has 2 divisors, whose sum is σ = 26106685932. Its totient is φ = 26106685930.

The previous prime is 26106685907. The next prime is 26106685937. The reversal of 26106685931 is 13958660162.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26106685931 - 2³⁰ = 25032944107 is a prime.

It is a super-2 number, since 2×26106685931² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26106685937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13053342965 + 13053342966.

It is an arithmetic number, because the mean of its divisors is an integer number (13053342966).

Almost surely, 2^26106685931 is an apocalyptic number.

26106685931 is a deficient number, since it is larger than the sum of its proper divisors (1).

26106685931 is an equidigital number, since it uses as much as digits as its factorization.

26106685931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 26106685931 in words is "twenty-six billion, one hundred six million, six hundred eighty-five thousand, nine hundred thirty-one".