12404720505684 has 24 divisors (see below), whose sum is σ = 31170836142880. Its totient is φ = 3816837078624.

The previous prime is 12404720505631. The next prime is 12404720505689. The reversal of 12404720505684 is 48650502740421.

It is a super-2 number, since 2×12404720505684² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12404720505689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39758719414 + ... + 39758719725.

Almost surely, 2^{12404720505684} is an apocalyptic number.

It is an amenable number.

12404720505684 is an abundant number, since it is smaller than the sum of its proper divisors (18766115637196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12404720505684 is a wasteful number, since it uses less digits than its factorization.

12404720505684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79517439159 (or 79517439157 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 48.

The spelling of 12404720505684 in words is "twelve trillion, four hundred four billion, seven hundred twenty million, five hundred five thousand, six hundred eighty-four".