26065138751 has 4 divisors (see below), whose sum is σ = 26270376192. Its totient is φ = 25859901312.

The previous prime is 26065138747. The next prime is 26065138789. The reversal of 26065138751 is 15783156062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15783156062 = 2 ⋅7891578031.

It is a cyclic number.

It is not a de Polignac number, because 26065138751 - 2² = 26065138747 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 (26065138711) 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, 102618530 + ... + 102618783.

It is an arithmetic number, because the mean of its divisors is an integer number (6567594048).

Almost surely, 2^26065138751 is an apocalyptic number.

26065138751 is a deficient number, since it is larger than the sum of its proper divisors (205237441).

26065138751 is a wasteful number, since it uses less digits than its factorization.

26065138751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205237440.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 26065138751 in words is "twenty-six billion, sixty-five million, one hundred thirty-eight thousand, seven hundred fifty-one".