26072745142321 has 4 divisors (see below), whose sum is σ = 26072845707892. Its totient is φ = 26072644576752.

The previous prime is 26072745142271. The next prime is 26072745142391. The reversal of 26072745142321 is 12324154727062.

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 711600222096 + 25361144920225 = 843564^2 + 5035985^2 .

It is a cyclic number.

It is not a de Polignac number, because 26072745142321 - 2¹³ = 26072745134129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26072745142391) 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, 49892886 + ... + 50412751.

It is an arithmetic number, because the mean of its divisors is an integer number (6518211426973).

Almost surely, 2^{26072745142321} is an apocalyptic number.

It is an amenable number.

26072745142321 is a deficient number, since it is larger than the sum of its proper divisors (100565571).

26072745142321 is a wasteful number, since it uses less digits than its factorization.

26072745142321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100565570.

The product of its (nonzero) digits is 1128960, while the sum is 46.

Adding to 26072745142321 its reverse (12324154727062), we get a palindrome (38396899869383).

The spelling of 26072745142321 in words is "twenty-six trillion, seventy-two billion, seven hundred forty-five million, one hundred forty-two thousand, three hundred twenty-one".