16132243921 has 16 divisors (see below), whose sum is σ = 16429754880. Its totient is φ = 15837834240.

The previous prime is 16132243903. The next prime is 16132243927. The reversal of 16132243921 is 12934223161.

It is a cyclic number.

It is not a de Polignac number, because 16132243921 - 2⁹ = 16132243409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16132243927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13104376 + ... + 13105606.

It is an arithmetic number, because the mean of its divisors is an integer number (1026859680).

Almost surely, 2^16132243921 is an apocalyptic number.

It is an amenable number.

16132243921 is a deficient number, since it is larger than the sum of its proper divisors (297510959).

16132243921 is a wasteful number, since it uses less digits than its factorization.

16132243921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304.

The product of its digits is 15552, while the sum is 34.

The spelling of 16132243921 in words is "sixteen billion, one hundred thirty-two million, two hundred forty-three thousand, nine hundred twenty-one".