26851119509 has 4 divisors (see below), whose sum is σ = 26852630304. Its totient is φ = 26849608716.

The previous prime is 26851119487. The next prime is 26851119511. The reversal of 26851119509 is 90591115862.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26851119509 - 2¹² = 26851115413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26851115509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 728417 + ... + 764390.

It is an arithmetic number, because the mean of its divisors is an integer number (6713157576).

Almost surely, 2^26851119509 is an apocalyptic number.

It is an amenable number.

26851119509 is a deficient number, since it is larger than the sum of its proper divisors (1510795).

26851119509 is a wasteful number, since it uses less digits than its factorization.

26851119509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510794.

The product of its (nonzero) digits is 194400, while the sum is 47.

The spelling of 26851119509 in words is "twenty-six billion, eight hundred fifty-one million, one hundred nineteen thousand, five hundred nine".