26405265047 has 4 divisors (see below), whose sum is σ = 30177445776. Its totient is φ = 22633084320.

The previous prime is 26405265043. The next prime is 26405265053. The reversal of 26405265047 is 74056250462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74056250462 = 2 ⋅37028125231.

It is not a de Polignac number, because 26405265047 - 2² = 26405265043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26405264995 and 26405265013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26405265043) 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, 1886090354 + ... + 1886090367.

It is an arithmetic number, because the mean of its divisors is an integer number (7544361444).

Almost surely, 2^26405265047 is an apocalyptic number.

26405265047 is a deficient number, since it is larger than the sum of its proper divisors (3772180729).

26405265047 is an equidigital number, since it uses as much as digits as its factorization.

26405265047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3772180728.

The product of its (nonzero) digits is 403200, while the sum is 41.

The spelling of 26405265047 in words is "twenty-six billion, four hundred five million, two hundred sixty-five thousand, forty-seven".