18039259434617 has 8 divisors (see below), whose sum is σ = 18197935297536. Its totient is φ = 17880843485232.

The previous prime is 18039259434541. The next prime is 18039259434661. The reversal of 18039259434617 is 71643495293081.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18039259434617 - 2¹⁰ = 18039259433593 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 18039259434617.

It is not an unprimeable number, because it can be changed into a prime (18039259934617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64838963 + ... + 65116584.

It is an arithmetic number, because the mean of its divisors is an integer number (2274741912192).

It is a 2-persistent number, because it is pandigital, and so is 2⋅18039259434617 = 36078518869234, but 3⋅18039259434617 = 54117778303851 is not.

Almost surely, 2^{18039259434617} is an apocalyptic number.

It is an amenable number.

18039259434617 is a deficient number, since it is larger than the sum of its proper divisors (158675862919).

18039259434617 is a wasteful number, since it uses less digits than its factorization.

18039259434617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129956767.

The product of its (nonzero) digits is 39191040, while the sum is 62.

The spelling of 18039259434617 in words is "eighteen trillion, thirty-nine billion, two hundred fifty-nine million, four hundred thirty-four thousand, six hundred seventeen".