16432647773021 has 4 divisors (see below), whose sum is σ = 16444004130912. Its totient is φ = 16421291415132.

The previous prime is 16432647772997. The next prime is 16432647773041. The reversal of 16432647773021 is 12037774623461.

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.

It is a cyclic number.

It is not a de Polignac number, because 16432647773021 - 2¹⁰ = 16432647771997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16432647773041) 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, 5678176775 + ... + 5678179668.

It is an arithmetic number, because the mean of its divisors is an integer number (4111001032728).

Almost surely, 2^{16432647773021} is an apocalyptic number.

It is an amenable number.

16432647773021 is a deficient number, since it is larger than the sum of its proper divisors (11356357891).

16432647773021 is a wasteful number, since it uses less digits than its factorization.

16432647773021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11356357890.

The product of its (nonzero) digits is 7112448, while the sum is 53.

The spelling of 16432647773021 in words is "sixteen trillion, four hundred thirty-two billion, six hundred forty-seven million, seven hundred seventy-three thousand, twenty-one".