26021312304161 has 4 divisors (see below), whose sum is σ = 26022059026500. Its totient is φ = 26020565581824.

The previous prime is 26021312304149. The next prime is 26021312304179. The reversal of 26021312304161 is 16140321312062.

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

It can be written as a sum of positive squares in 2 ways, for example, as 730913854225 + 25290398449936 = 854935^2 + 5028956^2 .

It is a cyclic number.

It is not a de Polignac number, because 26021312304161 - 2¹⁰ = 26021312303137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26021312304761) 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, 373308896 + ... + 373378593.

It is an arithmetic number, because the mean of its divisors is an integer number (6505514756625).

Almost surely, 2^{26021312304161} is an apocalyptic number.

It is an amenable number.

26021312304161 is a deficient number, since it is larger than the sum of its proper divisors (746722339).

26021312304161 is an equidigital number, since it uses as much as digits as its factorization.

26021312304161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746722338.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 26021312304161 in words is "twenty-six trillion, twenty-one billion, three hundred twelve million, three hundred four thousand, one hundred sixty-one".