26534786653469 has 2 divisors, whose sum is σ = 26534786653470. Its totient is φ = 26534786653468.

The previous prime is 26534786653423. The next prime is 26534786653489. The reversal of 26534786653469 is 96435668743562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26194302733369 + 340483920100 = 5118037^2 + 583510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26534786653469 is a prime.

It is a super-2 number, since 2×26534786653469² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26534786653396 and 26534786653405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26534786653489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13267393326734 + 13267393326735.

It is an arithmetic number, because the mean of its divisors is an integer number (13267393326735).

Almost surely, 2^{26534786653469} is an apocalyptic number.

It is an amenable number.

26534786653469 is a deficient number, since it is larger than the sum of its proper divisors (1).

26534786653469 is an equidigital number, since it uses as much as digits as its factorization.

26534786653469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4702924800, while the sum is 74.

The spelling of 26534786653469 in words is "twenty-six trillion, five hundred thirty-four billion, seven hundred eighty-six million, six hundred fifty-three thousand, four hundred sixty-nine".