11223393940 has 24 divisors (see below), whose sum is σ = 25711775712. Its totient is φ = 4081234080.

The previous prime is 11223393919. The next prime is 11223393943. The reversal of 11223393940 is 4939332211.

It is a self number, because there is not a number n which added to its sum of digits gives 11223393940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223393943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25507494 + ... + 25507933.

It is an arithmetic number, because the mean of its divisors is an integer number (1071323988).

Almost surely, 2^11223393940 is an apocalyptic number.

11223393940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11223393940 is an abundant number, since it is smaller than the sum of its proper divisors (14488381772).

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

11223393940 is a wasteful number, since it uses less digits than its factorization.

11223393940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51015447 (or 51015445 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 37.

The spelling of 11223393940 in words is "eleven billion, two hundred twenty-three million, three hundred ninety-three thousand, nine hundred forty".