26864400019 has 8 divisors (see below), whose sum is σ = 27876188160. Its totient is φ = 25861686600.

The previous prime is 26864399983. The next prime is 26864400047. The reversal of 26864400019 is 91000446862.

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

It is a cyclic number.

It is not a de Polignac number, because 26864400019 - 2¹⁵ = 26864367251 is a prime.

It is a super-2 number, since 2×26864400019² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26864400089) 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 7 ways as a sum of consecutive naturals, for example, 2262649 + ... + 2274490.

It is an arithmetic number, because the mean of its divisors is an integer number (3484523520).

Almost surely, 2^26864400019 is an apocalyptic number.

26864400019 is a deficient number, since it is larger than the sum of its proper divisors (1011788141).

26864400019 is a wasteful number, since it uses less digits than its factorization.

26864400019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4537361.

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 26864400019 in words is "twenty-six billion, eight hundred sixty-four million, four hundred thousand, nineteen".