12461989735 has 64 divisors (see below), whose sum is σ = 16719696000. Its totient is φ = 8860336128.

The previous prime is 12461989679. The next prime is 12461989747. The reversal of 12461989735 is 53798916421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12461989735 - 2¹⁹ = 12461465447 is a prime.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 64569799 + ... + 64569991.

It is an arithmetic number, because the mean of its divisors is an integer number (261245250).

Almost surely, 2^12461989735 is an apocalyptic number.

12461989735 is a deficient number, since it is larger than the sum of its proper divisors (4257706265).

12461989735 is a wasteful number, since it uses less digits than its factorization.

12461989735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532.

The product of its digits is 3265920, while the sum is 55.

The spelling of 12461989735 in words is "twelve billion, four hundred sixty-one million, nine hundred eighty-nine thousand, seven hundred thirty-five".