12446772949 has 8 divisors (see below), whose sum is σ = 13408791480. Its totient is φ = 11485407936.

The previous prime is 12446772941. The next prime is 12446772971. The reversal of 12446772949 is 94927764421.

It can be written as a sum of positive squares in 4 ways, for example, as 4485924 + 12442287025 = 2118^2 + 111545^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12446772949 - 2³ = 12446772941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12446772949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12446772941) 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, 123454 + ... + 200335.

It is an arithmetic number, because the mean of its divisors is an integer number (1676098935).

Almost surely, 2^12446772949 is an apocalyptic number.

It is an amenable number.

12446772949 is a deficient number, since it is larger than the sum of its proper divisors (962018531).

12446772949 is a wasteful number, since it uses less digits than its factorization.

12446772949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326759.

The product of its digits is 6096384, while the sum is 55.

The spelling of 12446772949 in words is "twelve billion, four hundred forty-six million, seven hundred seventy-two thousand, nine hundred forty-nine".