8206444501945 has 4 divisors (see below), whose sum is σ = 9847733402340. Its totient is φ = 6565155601552.

The previous prime is 8206444501907. The next prime is 8206444501949. The reversal of 8206444501945 is 5491054446028.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6231573601344 + 1974870900601 = 2496312^2 + 1405301^2 .

It is a cyclic number.

It is not a de Polignac number, because 8206444501945 - 2²⁷ = 8206310284217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8206444501892 and 8206444501901.

It is not an unprimeable number, because it can be changed into a prime (8206444501949) 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, 820644450190 + ... + 820644450199.

It is an arithmetic number, because the mean of its divisors is an integer number (2461933350585).

Almost surely, 2^{8206444501945} is an apocalyptic number.

It is an amenable number.

8206444501945 is a deficient number, since it is larger than the sum of its proper divisors (1641288900395).

8206444501945 is a wasteful number, since it uses less digits than its factorization.

8206444501945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641288900394.

The product of its (nonzero) digits is 5529600, while the sum is 52.

The spelling of 8206444501945 in words is "eight trillion, two hundred six billion, four hundred forty-four million, five hundred one thousand, nine hundred forty-five".