16664013929 has 4 divisors (see below), whose sum is σ = 16825800576. Its totient is φ = 16502227284.

The previous prime is 16664013923. The next prime is 16664013941. The reversal of 16664013929 is 92931046661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92931046661 = 19 ⋅4891107719.

It is a cyclic number.

It is not a de Polignac number, because 16664013929 - 2⁸ = 16664013673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16664013923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80893169 + ... + 80893374.

It is an arithmetic number, because the mean of its divisors is an integer number (4206450144).

Almost surely, 2^16664013929 is an apocalyptic number.

It is an amenable number.

16664013929 is a deficient number, since it is larger than the sum of its proper divisors (161786647).

16664013929 is a wasteful number, since it uses less digits than its factorization.

16664013929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161786646.

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 16664013929 in words is "sixteen billion, six hundred sixty-four million, thirteen thousand, nine hundred twenty-nine".