12650387747 has 4 divisors (see below), whose sum is σ = 12679204560. Its totient is φ = 12621570936.

The previous prime is 12650387723. The next prime is 12650387749. The reversal of 12650387747 is 74778305621.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12650387747 - 2⁶ = 12650387683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12650387695 and 12650387704.

It is not an unprimeable number, because it can be changed into a prime (12650387749) 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, 14407748 + ... + 14408625.

It is an arithmetic number, because the mean of its divisors is an integer number (3169801140).

Almost surely, 2^12650387747 is an apocalyptic number.

12650387747 is a deficient number, since it is larger than the sum of its proper divisors (28816813).

12650387747 is an equidigital number, since it uses as much as digits as its factorization.

12650387747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28816812.

The product of its (nonzero) digits is 1975680, while the sum is 50.

The spelling of 12650387747 in words is "twelve billion, six hundred fifty million, three hundred eighty-seven thousand, seven hundred forty-seven".