8372173540018 has 8 divisors (see below), whose sum is σ = 12558700773612. Its totient is φ = 4185939948816.

The previous prime is 8372173539959. The next prime is 8372173540051. The reversal of 8372173540018 is 8100453712738.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5830645696929 + 2541527843089 = 2414673^2 + 1594217^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73339305 + ... + 73453372.

Almost surely, 2^{8372173540018} is an apocalyptic number.

8372173540018 is a deficient number, since it is larger than the sum of its proper divisors (4186527233594).

8372173540018 is a wasteful number, since it uses less digits than its factorization.

8372173540018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146821196.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 8372173540018 in words is "eight trillion, three hundred seventy-two billion, one hundred seventy-three million, five hundred forty thousand, eighteen".