16389851004990 has 96 divisors (see below), whose sum is σ = 42753563588736. Its totient is φ = 4356275489280.

The previous prime is 16389851004949. The next prime is 16389851005001. The reversal of 16389851004990 is 9940015898361.

16389851004990 is a `hidden beast` number, since 1 + 6 + 3 + 8 + 98 + 51 + 0 + 0 + 499 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 464139435 + ... + 464174745.

It is an arithmetic number, because the mean of its divisors is an integer number (445349620716).

Almost surely, 2^{16389851004990} is an apocalyptic number.

16389851004990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16389851004990 is an abundant number, since it is smaller than the sum of its proper divisors (26363712583746).

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

16389851004990 is a wasteful number, since it uses less digits than its factorization.

16389851004990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52114 (or 52111 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 63.

The spelling of 16389851004990 in words is "sixteen trillion, three hundred eighty-nine billion, eight hundred fifty-one million, four thousand, nine hundred ninety".