12506335534 has 128 divisors (see below), whose sum is σ = 25648358400. Its totient is φ = 4427136000.

The previous prime is 12506335531. The next prime is 12506335547. The reversal of 12506335534 is 43553360521.

It is a junction number, because it is equal to n+sod(n) for n = 12506335493 and 12506335502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12506335531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7317072 + ... + 7318780.

It is an arithmetic number, because the mean of its divisors is an integer number (200377800).

Almost surely, 2^12506335534 is an apocalyptic number.

12506335534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12506335534 is an abundant number, since it is smaller than the sum of its proper divisors (13142022866).

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

12506335534 is a wasteful number, since it uses less digits than its factorization.

12506335534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850.

The product of its (nonzero) digits is 162000, while the sum is 37.

The spelling of 12506335534 in words is "twelve billion, five hundred six million, three hundred thirty-five thousand, five hundred thirty-four".