12486243840 has 160 divisors (see below), whose sum is σ = 45619580160. Its totient is φ = 2853986304.

The previous prime is 12486243823. The next prime is 12486243863. The reversal of 12486243840 is 4834268421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 12486243792 and 12486243801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62370 + ... + 169889.

It is an arithmetic number, because the mean of its divisors is an integer number (285122376).

Almost surely, 2^12486243840 is an apocalyptic number.

12486243840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12486243840 is an abundant number, since it is smaller than the sum of its proper divisors (33133336320).

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

12486243840 is an equidigital number, since it uses as much as digits as its factorization.

12486243840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232292 (or 232276 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The spelling of 12486243840 in words is "twelve billion, four hundred eighty-six million, two hundred forty-three thousand, eight hundred forty".