26430660609049 has 4 divisors (see below), whose sum is σ = 26431270764340. Its totient is φ = 26430050453760.

The previous prime is 26430660608941. The next prime is 26430660609097. The reversal of 26430660609049 is 94090606603462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23205608528400 + 3225052080649 = 4817220^2 + 1795843^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26430660609049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26430660609349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305012664 + ... + 305099305.

It is an arithmetic number, because the mean of its divisors is an integer number (6607817691085).

Almost surely, 2^{26430660609049} is an apocalyptic number.

It is an amenable number.

26430660609049 is a deficient number, since it is larger than the sum of its proper divisors (610155291).

26430660609049 is an equidigital number, since it uses as much as digits as its factorization.

26430660609049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610155290.

The product of its (nonzero) digits is 10077696, while the sum is 55.

The spelling of 26430660609049 in words is "twenty-six trillion, four hundred thirty billion, six hundred sixty million, six hundred nine thousand, forty-nine".