12461989738 has 16 divisors (see below), whose sum is σ = 20398004640. Its totient is φ = 5662969200.

The previous prime is 12461989679. The next prime is 12461989747. The reversal of 12461989738 is 83798916421.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4468 + ... + 157936.

It is an arithmetic number, because the mean of its divisors is an integer number (1274875290).

Almost surely, 2^12461989738 is an apocalyptic number.

12461989738 is a deficient number, since it is larger than the sum of its proper divisors (7936014902).

12461989738 is a wasteful number, since it uses less digits than its factorization.

12461989738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157173.

The product of its digits is 5225472, while the sum is 58.

The spelling of 12461989738 in words is "twelve billion, four hundred sixty-one million, nine hundred eighty-nine thousand, seven hundred thirty-eight".