18483021009999 has 48 divisors (see below), whose sum is σ = 33076311550464. Its totient is φ = 9684720936000.

The previous prime is 18483021009913. The next prime is 18483021010021. The reversal of 18483021009999 is 99990012038481.

18483021009999 is a `hidden beast` number, since 18 + 48 + 302 + 100 + 99 + 99 = 666.

It is not a de Polignac number, because 18483021009999 - 2³¹ = 18480873526351 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18483021059999) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74604117 + ... + 74851454.

It is an arithmetic number, because the mean of its divisors is an integer number (689089823968).

Almost surely, 2^{18483021009999} is an apocalyptic number.

18483021009999 is a deficient number, since it is larger than the sum of its proper divisors (14593290540465).

18483021009999 is a wasteful number, since it uses less digits than its factorization.

18483021009999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149455748 (or 149455745 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 63.

The spelling of 18483021009999 in words is "eighteen trillion, four hundred eighty-three billion, twenty-one million, nine thousand, nine hundred ninety-nine".