12018775042909 has 16 divisors (see below), whose sum is σ = 12836161520640. Its totient is φ = 11228360976000.

The previous prime is 12018775042849. The next prime is 12018775042933. The reversal of 12018775042909 is 90924057781021.

It is a cyclic number.

It is not a de Polignac number, because 12018775042909 - 2³⁷ = 11881336089437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12018775042909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12018775042969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5204169 + ... + 7149889.

It is an arithmetic number, because the mean of its divisors is an integer number (802260095040).

Almost surely, 2^{12018775042909} is an apocalyptic number.

It is an amenable number.

12018775042909 is a deficient number, since it is larger than the sum of its proper divisors (817386477731).

12018775042909 is a wasteful number, since it uses less digits than its factorization.

12018775042909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952652.

The product of its (nonzero) digits is 2540160, while the sum is 55.

The spelling of 12018775042909 in words is "twelve trillion, eighteen billion, seven hundred seventy-five million, forty-two thousand, nine hundred nine".