11814011817 has 4 divisors (see below), whose sum is σ = 15752015760. Its totient is φ = 7876007876.

The previous prime is 11814011813. The next prime is 11814011821. The reversal of 11814011817 is 71811041811.

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 an interprime number because it is at equal distance from previous prime (11814011813) and next prime (11814011821).

It is a cyclic number.

It is not a de Polignac number, because 11814011817 - 2² = 11814011813 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11814011813) 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, 1969001967 + ... + 1969001972.

It is an arithmetic number, because the mean of its divisors is an integer number (3938003940).

Almost surely, 2^11814011817 is an apocalyptic number.

It is an amenable number.

11814011817 is a deficient number, since it is larger than the sum of its proper divisors (3938003943).

11814011817 is an equidigital number, since it uses as much as digits as its factorization.

11814011817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938003942.

The product of its (nonzero) digits is 1792, while the sum is 33.

The spelling of 11814011817 in words is "eleven billion, eight hundred fourteen million, eleven thousand, eight hundred seventeen".