11823400912 has 90 divisors (see below), whose sum is σ = 24338060754. Its totient is φ = 5560151040.

The previous prime is 11823400909. The next prime is 11823400913. The reversal of 11823400912 is 21900432811.

It can be written as a sum of positive squares in 9 ways, for example, as 2988152896 + 8835248016 = 54664^2 + 93996^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11823400913) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 108471514 + ... + 108471622.

Almost surely, 2^11823400912 is an apocalyptic number.

It is an amenable number.

11823400912 is an abundant number, since it is smaller than the sum of its proper divisors (12514659842).

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

11823400912 is an equidigital number, since it uses as much as digits as its factorization.

11823400912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 11823400912 in words is "eleven billion, eight hundred twenty-three million, four hundred thousand, nine hundred twelve".