26145377354161 has 4 divisors (see below), whose sum is σ = 28156560227572. Its totient is φ = 24134194480752.

The previous prime is 26145377354123. The next prime is 26145377354227. The reversal of 26145377354161 is 16145377354162.

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 15418972890000 + 10726404464161 = 3926700^2 + 3275119^2 .

It is a cyclic number.

It is not a de Polignac number, because 26145377354161 - 2²⁹ = 26144840483249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26145377354101) 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, 1005591436686 + ... + 1005591436711.

It is an arithmetic number, because the mean of its divisors is an integer number (7039140056893).

Almost surely, 2^{26145377354161} is an apocalyptic number.

It is an amenable number.

26145377354161 is a deficient number, since it is larger than the sum of its proper divisors (2011182873411).

26145377354161 is a wasteful number, since it uses less digits than its factorization.

26145377354161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011182873410.

The product of its digits is 12700800, while the sum is 55.

Subtracting from 26145377354161 its reverse (16145377354162), we obtain a palindrome (9999999999999).

The spelling of 26145377354161 in words is "twenty-six trillion, one hundred forty-five billion, three hundred seventy-seven million, three hundred fifty-four thousand, one hundred sixty-one".