16646533016 has 32 divisors (see below), whose sum is σ = 32302108800. Its totient is φ = 8034021120.

The previous prime is 16646533009. The next prime is 16646533019. The reversal of 16646533016 is 61033564661.

It is a super-2 number, since 2×16646533016² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16646533019) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10196 + ... + 182748.

It is an arithmetic number, because the mean of its divisors is an integer number (1009440900).

Almost surely, 2^16646533016 is an apocalyptic number.

It is an amenable number.

16646533016 is a deficient number, since it is larger than the sum of its proper divisors (15655575784).

16646533016 is a wasteful number, since it uses less digits than its factorization.

16646533016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172979 (or 172975 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 16646533016 in words is "sixteen billion, six hundred forty-six million, five hundred thirty-three thousand, sixteen".