26203685819 has 12 divisors (see below), whose sum is σ = 26389655544. Its totient is φ = 26018893824.

The previous prime is 26203685791. The next prime is 26203685861. The reversal of 26203685819 is 91858630262.

It is not a de Polignac number, because 26203685819 - 2¹² = 26203681723 is a prime.

It is a super-2 number, since 2×26203685819² (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 (26203685869) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 40751912 + ... + 40752554.

It is an arithmetic number, because the mean of its divisors is an integer number (2199137962).

Almost surely, 2^26203685819 is an apocalyptic number.

26203685819 is a deficient number, since it is larger than the sum of its proper divisors (185969725).

26203685819 is an frugal number, since it uses more digits than its factorization.

26203685819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774 (or 1517 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 26203685819 in words is "twenty-six billion, two hundred three million, six hundred eighty-five thousand, eight hundred nineteen".