16840347990 has 64 divisors (see below), whose sum is σ = 40652914176. Its totient is φ = 4464605952.

The previous prime is 16840347971. The next prime is 16840348003. The reversal of 16840347990 is 9974304861.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 4132594 + ... + 4136666.

It is an arithmetic number, because the mean of its divisors is an integer number (635201784).

Almost surely, 2^16840347990 is an apocalyptic number.

16840347990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16840347990 is an abundant number, since it is smaller than the sum of its proper divisors (23812566186).

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

16840347990 is a wasteful number, since it uses less digits than its factorization.

16840347990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4853.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 16840347990 in words is "sixteen billion, eight hundred forty million, three hundred forty-seven thousand, nine hundred ninety".