18044390503210 has 32 divisors (see below), whose sum is σ = 32501403809280. Its totient is φ = 7212979067712.

The previous prime is 18044390503201. The next prime is 18044390503219. The reversal of 18044390503210 is 1230509344081.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18044390503201) and next prime (18044390503219).

It is not an unprimeable number, because it can be changed into a prime (18044390503219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194006337 + ... + 194099323.

It is an arithmetic number, because the mean of its divisors is an integer number (1015668869040).

Almost surely, 2^{18044390503210} is an apocalyptic number.

18044390503210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18044390503210 is a deficient number, since it is larger than the sum of its proper divisors (14457013306070).

18044390503210 is a wasteful number, since it uses less digits than its factorization.

18044390503210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105630.

The product of its (nonzero) digits is 103680, while the sum is 40.

Adding to 18044390503210 its reverse (1230509344081), we get a palindrome (19274899847291).

The spelling of 18044390503210 in words is "eighteen trillion, forty-four billion, three hundred ninety million, five hundred three thousand, two hundred ten".