26229486979 has 4 divisors (see below), whose sum is σ = 26230564984. Its totient is φ = 26228408976.

The previous prime is 26229486919. The next prime is 26229486989. The reversal of 26229486979 is 97968492262.

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

It is a cyclic number.

It is not a de Polignac number, because 26229486979 - 2¹³ = 26229478787 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 26229486979.

It is not an unprimeable number, because it can be changed into a prime (26229486919) 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, 501642 + ... + 551455.

It is an arithmetic number, because the mean of its divisors is an integer number (6557641246).

Almost surely, 2^26229486979 is an apocalyptic number.

26229486979 is a deficient number, since it is larger than the sum of its proper divisors (1078005).

26229486979 is a wasteful number, since it uses less digits than its factorization.

26229486979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078004.

The product of its digits is 47029248, while the sum is 64.

The spelling of 26229486979 in words is "twenty-six billion, two hundred twenty-nine million, four hundred eighty-six thousand, nine hundred seventy-nine".