12729458049 has 32 divisors (see below), whose sum is σ = 21843271680. Its totient is φ = 6399388800.

The previous prime is 12729458047. The next prime is 12729458057. The reversal of 12729458049 is 94085492721.

It is not a de Polignac number, because 12729458049 - 2¹ = 12729458047 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12729457992 and 12729458010.

It is not an unprimeable number, because it can be changed into a prime (12729458047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 881644 + ... + 895965.

It is an arithmetic number, because the mean of its divisors is an integer number (682602240).

Almost surely, 2^12729458049 is an apocalyptic number.

It is an amenable number.

12729458049 is a deficient number, since it is larger than the sum of its proper divisors (9113813631).

12729458049 is a wasteful number, since it uses less digits than its factorization.

12729458049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1777661.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 12729458049 in words is "twelve billion, seven hundred twenty-nine million, four hundred fifty-eight thousand, forty-nine".