11922453817 has 4 divisors (see below), whose sum is σ = 11933691876. Its totient is φ = 11911215760.

The previous prime is 11922453799. The next prime is 11922453839. The reversal of 11922453817 is 71835422911.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8262082816 + 3660371001 = 90896^2 + 60501^2 .

It is a cyclic number.

It is not a de Polignac number, because 11922453817 - 2⁷ = 11922453689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11922450817) 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, 5617438 + ... + 5619559.

It is an arithmetic number, because the mean of its divisors is an integer number (2983422969).

Almost surely, 2^11922453817 is an apocalyptic number.

It is an amenable number.

11922453817 is a deficient number, since it is larger than the sum of its proper divisors (11238059).

11922453817 is a wasteful number, since it uses less digits than its factorization.

11922453817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11238058.

The product of its digits is 120960, while the sum is 43.

The spelling of 11922453817 in words is "eleven billion, nine hundred twenty-two million, four hundred fifty-three thousand, eight hundred seventeen".