11105223978 has 8 divisors (see below), whose sum is σ = 22210447968. Its totient is φ = 3701741324.

The previous prime is 11105223977. The next prime is 11105223979. The reversal of 11105223978 is 87932250111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11105223977) and next prime (11105223979).

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

11105223978 is an admirable number.

It is a super-2 number, since 2×11105223978² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11105223971) 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, 925435326 + ... + 925435337.

It is an arithmetic number, because the mean of its divisors is an integer number (2776305996).

Almost surely, 2^11105223978 is an apocalyptic number.

11105223978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11105223978 is a wasteful number, since it uses less digits than its factorization.

11105223978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850870668.

The product of its (nonzero) digits is 30240, while the sum is 39.

The spelling of 11105223978 in words is "eleven billion, one hundred five million, two hundred twenty-three thousand, nine hundred seventy-eight".