12546240099 has 16 divisors (see below), whose sum is σ = 16909633440. Its totient is φ = 8273657600.

The previous prime is 12546240089. The next prime is 12546240103. The reversal of 12546240099 is 99004264521.

It is a Cunningham number, because it is equal to 112010²-1.

It is a cyclic number.

It is not a de Polignac number, because 12546240099 - 2⁵ = 12546240067 is a prime.

It is a super-3 number, since 3×12546240099³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12546240099.

It is not an unprimeable number, because it can be changed into a prime (12546240059) 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 15 ways as a sum of consecutive naturals, for example, 317359 + ... + 354695.

It is an arithmetic number, because the mean of its divisors is an integer number (1056852090).

Almost surely, 2^12546240099 is an apocalyptic number.

12546240099 is a deficient number, since it is larger than the sum of its proper divisors (4363393341).

12546240099 is a wasteful number, since it uses less digits than its factorization.

12546240099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38550.

The product of its (nonzero) digits is 155520, while the sum is 42.

It can be divided in two parts, 125462 and 40099, that added together give a palindrome (165561).

The spelling of 12546240099 in words is "twelve billion, five hundred forty-six million, two hundred forty thousand, ninety-nine".