16646735140 has 48 divisors (see below), whose sum is σ = 39967369344. Its totient is φ = 5705280000.

The previous prime is 16646735113. The next prime is 16646735153. The reversal of 16646735140 is 4153764661.

It is a super-2 number, since 2×16646735140² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370915 + ... + 413365.

It is an arithmetic number, because the mean of its divisors is an integer number (832653528).

Almost surely, 2^16646735140 is an apocalyptic number.

16646735140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16646735140 is an abundant number, since it is smaller than the sum of its proper divisors (23320634204).

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

16646735140 is a wasteful number, since it uses less digits than its factorization.

16646735140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45268 (or 45266 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 16646735140 in words is "sixteen billion, six hundred forty-six million, seven hundred thirty-five thousand, one hundred forty".