11105268978 has 8 divisors (see below), whose sum is σ = 22210537968. Its totient is φ = 3701756324.

The previous prime is 11105268971. The next prime is 11105268997. The reversal of 11105268978 is 87986250111.

It is a happy number.

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

11105268978 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11105268971) 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, 925439076 + ... + 925439087.

It is an arithmetic number, because the mean of its divisors is an integer number (2776317246).

Almost surely, 2^11105268978 is an apocalyptic number.

11105268978 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.

11105268978 is a wasteful number, since it uses less digits than its factorization.

11105268978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850878168.

The product of its (nonzero) digits is 241920, while the sum is 48.

The spelling of 11105268978 in words is "eleven billion, one hundred five million, two hundred sixty-eight thousand, nine hundred seventy-eight".