26221464055 has 4 divisors (see below), whose sum is σ = 31465756872. Its totient is φ = 20977171240.

The previous prime is 26221464053. The next prime is 26221464079. The reversal of 26221464055 is 55046412262.

It is a happy number.

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

It is not a de Polignac number, because 26221464055 - 2¹ = 26221464053 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 (26221464053) 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, 2622146401 + ... + 2622146410.

It is an arithmetic number, because the mean of its divisors is an integer number (7866439218).

Almost surely, 2^26221464055 is an apocalyptic number.

26221464055 is a deficient number, since it is larger than the sum of its proper divisors (5244292817).

26221464055 is an equidigital number, since it uses as much as digits as its factorization.

26221464055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5244292816.

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 26221464055 in words is "twenty-six billion, two hundred twenty-one million, four hundred sixty-four thousand, fifty-five".