80001800018 has 16 divisors (see below), whose sum is σ = 138427683264. Its totient is φ = 33966050640.

The previous prime is 80001799963. The next prime is 80001800071. The reversal of 80001800018 is 81000810008.

It is a super-2 number, since 2×80001800018² (a number of 23 digits) contains 22 as substring.

80001800018 is a modest number, since divided by 1800018 gives 8 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 80001800018.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26701373 + ... + 26704368.

It is an arithmetic number, because the mean of its divisors is an integer number (8651730204).

Almost surely, 2^80001800018 is an apocalyptic number.

80001800018 is a deficient number, since it is larger than the sum of its proper divisors (58425883246).

80001800018 is a wasteful number, since it uses less digits than its factorization.

80001800018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53405857.

The product of its (nonzero) digits is 512, while the sum is 26.

The spelling of 80001800018 in words is "eighty billion, one million, eight hundred thousand, eighteen".