16564112451443 has 4 divisors (see below), whose sum is σ = 16564425146928. Its totient is φ = 16563799755960.

The previous prime is 16564112451409. The next prime is 16564112451457. The reversal of 16564112451443 is 34415421146561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16564112451443 - 2²² = 16564108257139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16564112451463) 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, 156268271 + ... + 156374232.

It is an arithmetic number, because the mean of its divisors is an integer number (4141106286732).

Almost surely, 2^{16564112451443} is an apocalyptic number.

16564112451443 is a deficient number, since it is larger than the sum of its proper divisors (312695485).

16564112451443 is an equidigital number, since it uses as much as digits as its factorization.

16564112451443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312695484.

The product of its digits is 1382400, while the sum is 47.

The spelling of 16564112451443 in words is "sixteen trillion, five hundred sixty-four billion, one hundred twelve million, four hundred fifty-one thousand, four hundred forty-three".