26779267949 has 8 divisors (see below), whose sum is σ = 30606451968. Its totient is φ = 22952477520.

The previous prime is 26779267937. The next prime is 26779267961. The reversal of 26779267949 is 94976297762.

It is an interprime number because it is at equal distance from previous prime (26779267937) and next prime (26779267961).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26779267949 - 2³² = 22484300653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26779263949) 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 in 7 ways as a sum of consecutive naturals, for example, 65639 + ... + 240555.

It is an arithmetic number, because the mean of its divisors is an integer number (3825806496).

Almost surely, 2^26779267949 is an apocalyptic number.

It is an amenable number.

26779267949 is a deficient number, since it is larger than the sum of its proper divisors (3827184019).

26779267949 is a wasteful number, since it uses less digits than its factorization.

26779267949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196795.

The product of its digits is 144027072, while the sum is 68.

The spelling of 26779267949 in words is "twenty-six billion, seven hundred seventy-nine million, two hundred sixty-seven thousand, nine hundred forty-nine".