26899713845 has 16 divisors (see below), whose sum is σ = 32574917232. Its totient is φ = 21323043840.

The previous prime is 26899713833. The next prime is 26899713857. The reversal of 26899713845 is 54831799862.

It is an interprime number because it is at equal distance from previous prime (26899713833) and next prime (26899713857).

It can be written as a sum of positive squares in 8 ways, for example, as 7271143441 + 19628570404 = 85271^2 + 140102^2 .

It is not a de Polignac number, because 26899713845 - 2⁴ = 26899713829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3239519 + ... + 3247811.

It is an arithmetic number, because the mean of its divisors is an integer number (2035932327).

Almost surely, 2^26899713845 is an apocalyptic number.

It is an amenable number.

26899713845 is a deficient number, since it is larger than the sum of its proper divisors (5675203387).

26899713845 is a wasteful number, since it uses less digits than its factorization.

26899713845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14152.

The product of its digits is 26127360, while the sum is 62.

The spelling of 26899713845 in words is "twenty-six billion, eight hundred ninety-nine million, seven hundred thirteen thousand, eight hundred forty-five".