12542069985 has 16 divisors (see below), whose sum is σ = 20071749120. Its totient is φ = 6687624960.

The previous prime is 12542069933. The next prime is 12542069989. The reversal of 12542069985 is 58996024521.

12542069985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12542069985 - 2⁹ = 12542069473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12542069989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20536 + ... + 159705.

It is an arithmetic number, because the mean of its divisors is an integer number (1254484320).

Almost surely, 2^12542069985 is an apocalyptic number.

12542069985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12542069985 is a deficient number, since it is larger than the sum of its proper divisors (7529679135).

12542069985 is a wasteful number, since it uses less digits than its factorization.

12542069985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184888.

The product of its (nonzero) digits is 1555200, while the sum is 51.

The spelling of 12542069985 in words is "twelve billion, five hundred forty-two million, sixty-nine thousand, nine hundred eighty-five".