11194123280 has 40 divisors (see below), whose sum is σ = 27557300952. Its totient is φ = 4214257664.

The previous prime is 11194123267. The next prime is 11194123309. The reversal of 11194123280 is 8232149111.

It can be written as a sum of positive squares in 4 ways, for example, as 4436625664 + 6757497616 = 66608^2 + 82204^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4114127 + ... + 4116846.

Almost surely, 2^11194123280 is an apocalyptic number.

11194123280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11194123280 is an abundant number, since it is smaller than the sum of its proper divisors (16363177672).

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

11194123280 is a wasteful number, since it uses less digits than its factorization.

11194123280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8231003 (or 8230997 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The spelling of 11194123280 in words is "eleven billion, one hundred ninety-four million, one hundred twenty-three thousand, two hundred eighty".