16640193021870 has 128 divisors (see below), whose sum is σ = 45862344529920. Its totient is φ = 3821480208000.

The previous prime is 16640193021839. The next prime is 16640193021899. The reversal of 16640193021870 is 7812039104661.

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 63 ways as a sum of consecutive naturals, for example, 154006165 + ... + 154114175.

It is an arithmetic number, because the mean of its divisors is an integer number (358299566640).

Almost surely, 2^{16640193021870} is an apocalyptic number.

16640193021870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16640193021870 is an abundant number, since it is smaller than the sum of its proper divisors (29222151508050).

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

16640193021870 is a wasteful number, since it uses less digits than its factorization.

16640193021870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132622.

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 16640193021870 in words is "sixteen trillion, six hundred forty billion, one hundred ninety-three million, twenty-one thousand, eight hundred seventy".