26145155154161 has 8 divisors (see below), whose sum is σ = 26503563817800. Its totient is φ = 25788182999040.

The previous prime is 26145155154113. The next prime is 26145155154169. The reversal of 26145155154161 is 16145155154162.

It can be written as a sum of positive squares in 4 ways, for example, as 4899914280625 + 21245240873536 = 2213575^2 + 4609256^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26145155154161 is a prime.

It is a super-2 number, since 2×26145155154161² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26145155154169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359090480 + ... + 359163281.

It is an arithmetic number, because the mean of its divisors is an integer number (3312945477225).

Almost surely, 2^{26145155154161} is an apocalyptic number.

It is an amenable number.

26145155154161 is a deficient number, since it is larger than the sum of its proper divisors (358408663639).

26145155154161 is an equidigital number, since it uses as much as digits as its factorization.

26145155154161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718254259.

The product of its digits is 720000, while the sum is 47.

Subtracting from 26145155154161 its reverse (16145155154162), we obtain a palindrome (9999999999999).

The spelling of 26145155154161 in words is "twenty-six trillion, one hundred forty-five billion, one hundred fifty-five million, one hundred fifty-four thousand, one hundred sixty-one".