16651949132 has 24 divisors (see below), whose sum is σ = 35865737376. Its totient is φ = 6587584128.

The previous prime is 16651949131. The next prime is 16651949207. The reversal of 16651949132 is 23194915661.

It is a happy number.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (16651949131) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 22873193 + ... + 22873920.

It is an arithmetic number, because the mean of its divisors is an integer number (1494405724).

Almost surely, 2^16651949132 is an apocalyptic number.

It is an amenable number.

16651949132 is an abundant number, since it is smaller than the sum of its proper divisors (19213788244).

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

16651949132 is a wasteful number, since it uses less digits than its factorization.

16651949132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45747137 (or 45747135 counting only the distinct ones).

The product of its digits is 349920, while the sum is 47.

The spelling of 16651949132 in words is "sixteen billion, six hundred fifty-one million, nine hundred forty-nine thousand, one hundred thirty-two".