18153159879579 has 8 divisors (see below), whose sum is σ = 24228201495120. Its totient is φ = 12090112425216.

The previous prime is 18153159879557. The next prime is 18153159879607. The reversal of 18153159879579 is 97597895135181.

It is a happy number.

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

It is not a de Polignac number, because 18153159879579 - 2⁷ = 18153159879451 is a prime.

It is a super-2 number, since 2×18153159879579² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (78) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18153159879079) 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, 2998536762 + ... + 2998542815.

It is an arithmetic number, because the mean of its divisors is an integer number (3028525186890).

Almost surely, 2^{18153159879579} is an apocalyptic number.

18153159879579 is a deficient number, since it is larger than the sum of its proper divisors (6075041615541).

18153159879579 is a wasteful number, since it uses less digits than its factorization.

18153159879579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5997080589.

The product of its digits is 857304000, while the sum is 78.

The spelling of 18153159879579 in words is "eighteen trillion, one hundred fifty-three billion, one hundred fifty-nine million, eight hundred seventy-nine thousand, five hundred seventy-nine".