8166873006445 has 8 divisors (see below), whose sum is σ = 9800341255800. Its totient is φ = 6533435973120.

The previous prime is 8166873006431. The next prime is 8166873006463. The reversal of 8166873006445 is 5446003786618.

It can be written as a sum of positive squares in 4 ways, for example, as 4764183655401 + 3402689351044 = 2182701^2 + 1844638^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8166873006445 - 2⁷ = 8166873006317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8166873006445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7224520 + ... + 8278129.

It is an arithmetic number, because the mean of its divisors is an integer number (1225042656975).

Almost surely, 2^{8166873006445} is an apocalyptic number.

It is an amenable number.

8166873006445 is a deficient number, since it is larger than the sum of its proper divisors (1633468249355).

8166873006445 is a wasteful number, since it uses less digits than its factorization.

8166873006445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15608015.

The product of its (nonzero) digits is 23224320, while the sum is 58.

The spelling of 8166873006445 in words is "eight trillion, one hundred sixty-six billion, eight hundred seventy-three million, six thousand, four hundred forty-five".