26132949569 has 2 divisors, whose sum is σ = 26132949570. Its totient is φ = 26132949568.

The previous prime is 26132949503. The next prime is 26132949599. The reversal of 26132949569 is 96594923162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16254975025 + 9877974544 = 127495^2 + 99388^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26132949569 is a prime.

It is a super-2 number, since 2×26132949569² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26132949599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13066474784 + 13066474785.

It is an arithmetic number, because the mean of its divisors is an integer number (13066474785).

Almost surely, 2^26132949569 is an apocalyptic number.

It is an amenable number.

26132949569 is a deficient number, since it is larger than the sum of its proper divisors (1).

26132949569 is an equidigital number, since it uses as much as digits as its factorization.

26132949569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6298560, while the sum is 56.

The spelling of 26132949569 in words is "twenty-six billion, one hundred thirty-two million, nine hundred forty-nine thousand, five hundred sixty-nine".