26163797722 has 4 divisors (see below), whose sum is σ = 39245696586. Its totient is φ = 13081898860.

The previous prime is 26163797719. The next prime is 26163797731. The reversal of 26163797722 is 22779736162.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22779736162 = 2 ⋅11389868081.

It can be written as a sum of positive squares in only one way, i.e., 25135248681 + 1028549041 = 158541^2 + 32071^2 .

It is a super-2 number, since 2×26163797722² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26163797722.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6540949429 + ... + 6540949432.

Almost surely, 2^26163797722 is an apocalyptic number.

26163797722 is a deficient number, since it is larger than the sum of its proper divisors (13081898864).

26163797722 is a wasteful number, since it uses less digits than its factorization.

26163797722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13081898863.

The product of its digits is 2667168, while the sum is 52.

The spelling of 26163797722 in words is "twenty-six billion, one hundred sixty-three million, seven hundred ninety-seven thousand, seven hundred twenty-two".