26830467865 has 8 divisors (see below), whose sum is σ = 32198429448. Its totient is φ = 21463128960.

The previous prime is 26830467803. The next prime is 26830467871. The reversal of 26830467865 is 56876403862.

It can be written as a sum of positive squares in 4 ways, for example, as 5901926976 + 20928540889 = 76824^2 + 144667^2 .

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

It is not a de Polignac number, because 26830467865 - 2¹³ = 26830459673 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 54946 + ... + 238075.

It is an arithmetic number, because the mean of its divisors is an integer number (4024803681).

Almost surely, 2^26830467865 is an apocalyptic number.

It is an amenable number.

26830467865 is a deficient number, since it is larger than the sum of its proper divisors (5367961583).

26830467865 is a wasteful number, since it uses less digits than its factorization.

26830467865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311339.

The product of its (nonzero) digits is 11612160, while the sum is 55.

The spelling of 26830467865 in words is "twenty-six billion, eight hundred thirty million, four hundred sixty-seven thousand, eight hundred sixty-five".