26429193617 has 2 divisors, whose sum is σ = 26429193618. Its totient is φ = 26429193616.

The previous prime is 26429193551. The next prime is 26429193653. The reversal of 26429193617 is 71639192462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16876867921 + 9552325696 = 129911^2 + 97736^2 .

It is a cyclic number.

It is not a de Polignac number, because 26429193617 - 2²⁶ = 26362084753 is a prime.

It is not a weakly prime, because it can be changed into another prime (26429193697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13214596808 + 13214596809.

It is an arithmetic number, because the mean of its divisors is an integer number (13214596809).

Almost surely, 2^26429193617 is an apocalyptic number.

It is an amenable number.

26429193617 is a deficient number, since it is larger than the sum of its proper divisors (1).

26429193617 is an equidigital number, since it uses as much as digits as its factorization.

26429193617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 50.

The spelling of 26429193617 in words is "twenty-six billion, four hundred twenty-nine million, one hundred ninety-three thousand, six hundred seventeen".