1808512712311 has 4 divisors (see below), whose sum is σ = 1818966543192. Its totient is φ = 1798058881432.

The previous prime is 1808512712297. The next prime is 1808512712323. The reversal of 1808512712311 is 1132172158081.

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

It is a cyclic number.

It is not a de Polignac number, because 1808512712311 - 2¹⁵ = 1808512679543 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 (1808512712351) 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, 5226915181 + ... + 5226915526.

It is an arithmetic number, because the mean of its divisors is an integer number (454741635798).

Almost surely, 2^{1808512712311} is an apocalyptic number.

1808512712311 is a deficient number, since it is larger than the sum of its proper divisors (10453830881).

1808512712311 is a wasteful number, since it uses less digits than its factorization.

1808512712311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10453830880.

The product of its (nonzero) digits is 26880, while the sum is 40.

The spelling of 1808512712311 in words is "one trillion, eight hundred eight billion, five hundred twelve million, seven hundred twelve thousand, three hundred eleven".