18585152611803 has 12 divisors (see below), whose sum is σ = 28258126778440. Its totient is φ = 11737991123136.

The previous prime is 18585152611799. The next prime is 18585152611813. The reversal of 18585152611803 is 30811625158581.

It is a happy number.

18585152611803 is a `hidden beast` number, since 1 + 8 + 5 + 8 + 5 + 15 + 2 + 611 + 8 + 0 + 3 = 666.

It is not a de Polignac number, because 18585152611803 - 2² = 18585152611799 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 18585152611803.

It is not an unprimeable number, because it can be changed into a prime (18585152611813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54342551326 + ... + 54342551667.

Almost surely, 2^{18585152611803} is an apocalyptic number.

18585152611803 is a deficient number, since it is larger than the sum of its proper divisors (9672974166637).

18585152611803 is a wasteful number, since it uses less digits than its factorization.

18585152611803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108685103018 (or 108685103015 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 54.

The spelling of 18585152611803 in words is "eighteen trillion, five hundred eighty-five billion, one hundred fifty-two million, six hundred eleven thousand, eight hundred three".