12440230836 has 24 divisors (see below), whose sum is σ = 31666042464. Its totient is φ = 3769766880.

The previous prime is 12440230813. The next prime is 12440230837. The reversal of 12440230836 is 63803204421.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 12440230797 and 12440230806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440230837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47121955 + ... + 47122218.

It is an arithmetic number, because the mean of its divisors is an integer number (1319418436).

Almost surely, 2^12440230836 is an apocalyptic number.

It is an amenable number.

12440230836 is an abundant number, since it is smaller than the sum of its proper divisors (19225811628).

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

12440230836 is a wasteful number, since it uses less digits than its factorization.

12440230836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94244191 (or 94244189 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The spelling of 12440230836 in words is "twelve billion, four hundred forty million, two hundred thirty thousand, eight hundred thirty-six".