11138997005817 has 4 divisors (see below), whose sum is σ = 14851996007760. Its totient is φ = 7425998003876.

The previous prime is 11138997005809. The next prime is 11138997005819. The reversal of 11138997005817 is 71850079983111.

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 11138997005817 - 2³ = 11138997005809 is a prime.

It is a super-2 number, since 2×11138997005817² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11138997005819) 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, 1856499500967 + ... + 1856499500972.

It is an arithmetic number, because the mean of its divisors is an integer number (3712999001940).

Almost surely, 2^{11138997005817} is an apocalyptic number.

It is an amenable number.

11138997005817 is a deficient number, since it is larger than the sum of its proper divisors (3712999001943).

11138997005817 is an equidigital number, since it uses as much as digits as its factorization.

11138997005817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3712999001942.

The product of its (nonzero) digits is 3810240, while the sum is 60.

The spelling of 11138997005817 in words is "eleven trillion, one hundred thirty-eight billion, nine hundred ninety-seven million, five thousand, eight hundred seventeen".