18000002999999 has 16 divisors (see below), whose sum is σ = 18047070324192. Its totient is φ = 17953014296448.

The previous prime is 18000002999983. The next prime is 18000003000013. The reversal of 18000002999999 is 99999920000081.

It is a cyclic number.

It is not a de Polignac number, because 18000002999999 - 2⁴ = 18000002999983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18000002999969) 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, 3038998052 + ... + 3039003974.

It is an arithmetic number, because the mean of its divisors is an integer number (1127941895262).

Almost surely, 2^{18000002999999} is an apocalyptic number.

18000002999999 is a deficient number, since it is larger than the sum of its proper divisors (47067324193).

18000002999999 is a wasteful number, since it uses less digits than its factorization.

18000002999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11306.

The product of its (nonzero) digits is 8503056, while the sum is 65.

It can be divided in two parts, 180000029 and 99999, that multiplied together give a palindrome (17999822899971).

The spelling of 18000002999999 in words is "eighteen trillion, two million, nine hundred ninety-nine thousand, nine hundred ninety-nine".