12449885156 has 12 divisors (see below), whose sum is σ = 22085755692. Its totient is φ = 6139669248.

The previous prime is 12449885137. The next prime is 12449885167. The reversal of 12449885156 is 65158894421.

It can be written as a sum of positive squares in 2 ways, for example, as 3794560000 + 8655325156 = 61600^2 + 93034^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12449885098 and 12449885107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21318005 + ... + 21318588.

It is an arithmetic number, because the mean of its divisors is an integer number (1840479641).

Almost surely, 2^12449885156 is an apocalyptic number.

It is an amenable number.

12449885156 is a deficient number, since it is larger than the sum of its proper divisors (9635870536).

12449885156 is a wasteful number, since it uses less digits than its factorization.

12449885156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42636670 (or 42636668 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 53.

The spelling of 12449885156 in words is "twelve billion, four hundred forty-nine million, eight hundred eighty-five thousand, one hundred fifty-six".