26149432032469 has 2 divisors, whose sum is σ = 26149432032470. Its totient is φ = 26149432032468.

The previous prime is 26149432032461. The next prime is 26149432032487. The reversal of 26149432032469 is 96423023494162.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17257626892900 + 8891805139569 = 4154230^2 + 2981913^2 .

It is a cyclic number.

It is not a de Polignac number, because 26149432032469 - 2³ = 26149432032461 is a prime.

It is a super-2 number, since 2×26149432032469² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26149432032461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13074716016234 + 13074716016235.

It is an arithmetic number, because the mean of its divisors is an integer number (13074716016235).

Almost surely, 2^{26149432032469} is an apocalyptic number.

It is an amenable number.

26149432032469 is a deficient number, since it is larger than the sum of its proper divisors (1).

26149432032469 is an equidigital number, since it uses as much as digits as its factorization.

26149432032469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13436928, while the sum is 55.

The spelling of 26149432032469 in words is "twenty-six trillion, one hundred forty-nine billion, four hundred thirty-two million, thirty-two thousand, four hundred sixty-nine".