18019800000036 has 36 divisors (see below), whose sum is σ = 45554038612992. Its totient is φ = 6006074029104.

The previous prime is 18019800000029. The next prime is 18019800000053. The reversal of 18019800000036 is 63000000891081.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×18019800000036³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21498516 + ... + 22320971.

It is an arithmetic number, because the mean of its divisors is an integer number (1265389961472).

Almost surely, 2^{18019800000036} is an apocalyptic number.

It is an amenable number.

18019800000036 is an abundant number, since it is smaller than the sum of its proper divisors (27534238612956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18019800000036 is a wasteful number, since it uses less digits than its factorization.

18019800000036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43830920 (or 43830915 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The spelling of 18019800000036 in words is "eighteen trillion, nineteen billion, eight hundred million, thirty-six", and thus it is an aban number.