18331620063125 has 40 divisors (see below), whose sum is σ = 23232194568000. Its totient is φ = 14457270240000.

The previous prime is 18331620063121. The next prime is 18331620063157. The reversal of 18331620063125 is 52136002613381.

It is not a de Polignac number, because 18331620063125 - 2² = 18331620063121 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18331620063121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 693079901 + ... + 693106349.

It is an arithmetic number, because the mean of its divisors is an integer number (580804864200).

Almost surely, 2^{18331620063125} is an apocalyptic number.

It is an amenable number.

18331620063125 is a deficient number, since it is larger than the sum of its proper divisors (4900574504875).

18331620063125 is an equidigital number, since it uses as much as digits as its factorization.

18331620063125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42159 (or 42144 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 18331620063125 in words is "eighteen trillion, three hundred thirty-one billion, six hundred twenty million, sixty-three thousand, one hundred twenty-five".