26079148549 has 4 divisors (see below), whose sum is σ = 26372172780. Its totient is φ = 25786124320.

The previous prime is 26079148519. The next prime is 26079148583. The reversal of 26079148549 is 94584197062.

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 3155068900 + 22924079649 = 56170^2 + 151407^2 .

It is a cyclic number.

It is not a de Polignac number, because 26079148549 - 2⁵ = 26079148517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26079148549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26079148519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146511982 + ... + 146512159.

It is an arithmetic number, because the mean of its divisors is an integer number (6593043195).

Almost surely, 2^26079148549 is an apocalyptic number.

It is an amenable number.

26079148549 is a deficient number, since it is larger than the sum of its proper divisors (293024231).

26079148549 is an equidigital number, since it uses as much as digits as its factorization.

26079148549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293024230.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 26079148549 in words is "twenty-six billion, seventy-nine million, one hundred forty-eight thousand, five hundred forty-nine".