16721183559090 has 64 divisors (see below), whose sum is σ = 42205389520896. Its totient is φ = 4231529894592.

The previous prime is 16721183559049. The next prime is 16721183559097. The reversal of 16721183559090 is 9095538112761.

It is a self number, because there is not a number n which added to its sum of digits gives 16721183559090.

It is not an unprimeable number, because it can be changed into a prime (16721183559097) 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 31 ways as a sum of consecutive naturals, for example, 95320242 + ... + 95495501.

It is an arithmetic number, because the mean of its divisors is an integer number (659459211264).

Almost surely, 2^{16721183559090} is an apocalyptic number.

16721183559090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16721183559090 is an abundant number, since it is smaller than the sum of its proper divisors (25484205961806).

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

16721183559090 is a wasteful number, since it uses less digits than its factorization.

16721183559090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190815903.

The product of its (nonzero) digits is 4082400, while the sum is 57.

The spelling of 16721183559090 in words is "sixteen trillion, seven hundred twenty-one billion, one hundred eighty-three million, five hundred fifty-nine thousand, ninety".