16332544641 has 16 divisors (see below), whose sum is σ = 25259147264. Its totient is φ = 9193585104.

The previous prime is 16332544567. The next prime is 16332544661. The reversal of 16332544641 is 14644523361.

It is not a de Polignac number, because 16332544641 - 2²⁶ = 16265435777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16332544641.

It is not an unprimeable number, because it can be changed into a prime (16332544661) 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, 5802625 + ... + 5805438.

It is an arithmetic number, because the mean of its divisors is an integer number (1578696704).

Almost surely, 2^16332544641 is an apocalyptic number.

It is an amenable number.

16332544641 is a deficient number, since it is larger than the sum of its proper divisors (8926602623).

16332544641 is a wasteful number, since it uses less digits than its factorization.

16332544641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11608140.

The product of its digits is 207360, while the sum is 39.

The spelling of 16332544641 in words is "sixteen billion, three hundred thirty-two million, five hundred forty-four thousand, six hundred forty-one".