26830492649 has 8 divisors (see below), whose sum is σ = 27114508680. Its totient is φ = 26546628096.

The previous prime is 26830492621. The next prime is 26830492679. The reversal of 26830492649 is 94629403862.

It can be written as a sum of positive squares in 4 ways, for example, as 10101657049 + 16728835600 = 100507^2 + 129340^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26830492649 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 26830492649.

It is not an unprimeable number, because it can be changed into a prime (26830492679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337847 + ... + 409635.

It is an arithmetic number, because the mean of its divisors is an integer number (3389313585).

Almost surely, 2^26830492649 is an apocalyptic number.

It is an amenable number.

26830492649 is a deficient number, since it is larger than the sum of its proper divisors (284016031).

26830492649 is an equidigital number, since it uses as much as digits as its factorization.

26830492649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75739.

The product of its (nonzero) digits is 4478976, while the sum is 53.

The spelling of 26830492649 in words is "twenty-six billion, eight hundred thirty million, four hundred ninety-two thousand, six hundred forty-nine".