21483724410818 has 32 divisors (see below), whose sum is σ = 35406482728320. Its totient is φ = 9735789208320.

The previous prime is 21483724410817. The next prime is 21483724410823. The reversal of 21483724410818 is 81801442738412.

It is a self number, because there is not a number n which added to its sum of digits gives 21483724410818.

It is not an unprimeable number, because it can be changed into a prime (21483724410817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103380353 + ... + 103587956.

It is an arithmetic number, because the mean of its divisors is an integer number (1106452585260).

Almost surely, 2^{21483724410818} is an apocalyptic number.

21483724410818 is a deficient number, since it is larger than the sum of its proper divisors (13922758317502).

21483724410818 is a wasteful number, since it uses less digits than its factorization.

21483724410818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206968442.

The product of its (nonzero) digits is 2752512, while the sum is 53.

The spelling of 21483724410818 in words is "twenty-one trillion, four hundred eighty-three billion, seven hundred twenty-four million, four hundred ten thousand, eight hundred eighteen".