11223678817 has 8 divisors (see below), whose sum is σ = 12798041256. Its totient is φ = 9750888192.

The previous prime is 11223678799. The next prime is 11223678821. The reversal of 11223678817 is 71887632211.

It can be written as a sum of positive squares in 4 ways, for example, as 4028567841 + 7195110976 = 63471^2 + 84824^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11223678817 - 2²³ = 11215290209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11223678857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25392718 + ... + 25393159.

It is an arithmetic number, because the mean of its divisors is an integer number (1599755157).

Almost surely, 2^11223678817 is an apocalyptic number.

11223678817 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11223678817 is a deficient number, since it is larger than the sum of its proper divisors (1574362439).

11223678817 is a wasteful number, since it uses less digits than its factorization.

11223678817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50785907.

The product of its digits is 225792, while the sum is 46.

The spelling of 11223678817 in words is "eleven billion, two hundred twenty-three million, six hundred seventy-eight thousand, eight hundred seventeen".