16452313751721 has 4 divisors (see below), whose sum is σ = 21936418335632. Its totient is φ = 10968209167812.

The previous prime is 16452313751711. The next prime is 16452313751723. The reversal of 16452313751721 is 12715731325461.

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.

It is not a de Polignac number, because 16452313751721 - 2¹⁴ = 16452313735337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16452313751723) 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, 2742052291951 + ... + 2742052291956.

It is an arithmetic number, because the mean of its divisors is an integer number (5484104583908).

Almost surely, 2^{16452313751721} is an apocalyptic number.

It is an amenable number.

16452313751721 is a deficient number, since it is larger than the sum of its proper divisors (5484104583911).

16452313751721 is an equidigital number, since it uses as much as digits as its factorization.

16452313751721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5484104583910.

The product of its digits is 1058400, while the sum is 48.

The spelling of 16452313751721 in words is "sixteen trillion, four hundred fifty-two billion, three hundred thirteen million, seven hundred fifty-one thousand, seven hundred twenty-one".