26409131807 has 4 divisors (see below), whose sum is σ = 26842068456. Its totient is φ = 25976195160.

The previous prime is 26409131747. The next prime is 26409131839. The reversal of 26409131807 is 70813190462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26409131807 - 2¹⁴ = 26409115423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26409131857) 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, 216468233 + ... + 216468354.

It is an arithmetic number, because the mean of its divisors is an integer number (6710517114).

Almost surely, 2^26409131807 is an apocalyptic number.

26409131807 is a deficient number, since it is larger than the sum of its proper divisors (432936649).

26409131807 is an equidigital number, since it uses as much as digits as its factorization.

26409131807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432936648.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 26409131807 in words is "twenty-six billion, four hundred nine million, one hundred thirty-one thousand, eight hundred seven".