12475915049 has 4 divisors (see below), whose sum is σ = 13435600836. Its totient is φ = 11516229264.

The previous prime is 12475914991. The next prime is 12475915087. The reversal of 12475915049 is 94051957421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3390965824 + 9084949225 = 58232^2 + 95315^2 .

It is a cyclic number.

It is not a de Polignac number, because 12475915049 - 2¹⁶ = 12475849513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12475914994 and 12475915012.

It is not an unprimeable number, because it can be changed into a prime (12475915849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479842874 + ... + 479842899.

It is an arithmetic number, because the mean of its divisors is an integer number (3358900209).

Almost surely, 2^12475915049 is an apocalyptic number.

It is an amenable number.

12475915049 is a deficient number, since it is larger than the sum of its proper divisors (959685787).

12475915049 is an equidigital number, since it uses as much as digits as its factorization.

12475915049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959685786.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 12475915049 in words is "twelve billion, four hundred seventy-five million, nine hundred fifteen thousand, forty-nine".