26862942857 has 4 divisors (see below), whose sum is σ = 26924982420. Its totient is φ = 26800903296.

The previous prime is 26862942839. The next prime is 26862942863. The reversal of 26862942857 is 75824926862.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3526103161 + 23336839696 = 59381^2 + 152764^2 .

It is a cyclic number.

It is not a de Polignac number, because 26862942857 - 2³⁰ = 25789201033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26862942796 and 26862942805.

It is not an unprimeable number, because it can be changed into a prime (26862942877) 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 3 ways as a sum of consecutive naturals, for example, 31019132 + ... + 31019997.

It is an arithmetic number, because the mean of its divisors is an integer number (6731245605).

Almost surely, 2^26862942857 is an apocalyptic number.

It is an amenable number.

26862942857 is a deficient number, since it is larger than the sum of its proper divisors (62039563).

26862942857 is an equidigital number, since it uses as much as digits as its factorization.

26862942857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62039562.

The product of its digits is 23224320, while the sum is 59.

The spelling of 26862942857 in words is "twenty-six billion, eight hundred sixty-two million, nine hundred forty-two thousand, eight hundred fifty-seven".