12450478836 has 48 divisors (see below), whose sum is σ = 31591377216. Its totient is φ = 3800461824.

The previous prime is 12450478753. The next prime is 12450478837. The reversal of 12450478836 is 63887405421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12450478837) 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 15 ways as a sum of consecutive naturals, for example, 817206 + ... + 832301.

It is an arithmetic number, because the mean of its divisors is an integer number (658153692).

Almost surely, 2^12450478836 is an apocalyptic number.

It is an amenable number.

12450478836 is an abundant number, since it is smaller than the sum of its proper divisors (19140898380).

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

12450478836 is a wasteful number, since it uses less digits than its factorization.

12450478836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649568 (or 1649566 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 12450478836 in words is "twelve billion, four hundred fifty million, four hundred seventy-eight thousand, eight hundred thirty-six".