26517056321 has 16 divisors (see below), whose sum is σ = 30415564800. Its totient is φ = 22646290128.

The previous prime is 26517056273. The next prime is 26517056341. The reversal of 26517056321 is 12365071562.

It is a happy number.

It is not a de Polignac number, because 26517056321 - 2³⁴ = 9337187137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26517056341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2284310 + ... + 2295888.

It is an arithmetic number, because the mean of its divisors is an integer number (1900972800).

Almost surely, 2^26517056321 is an apocalyptic number.

It is an amenable number.

26517056321 is a deficient number, since it is larger than the sum of its proper divisors (3898508479).

26517056321 is a wasteful number, since it uses less digits than its factorization.

26517056321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12748.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 26517056321 in words is "twenty-six billion, five hundred seventeen million, fifty-six thousand, three hundred twenty-one".