8947132445518 has 4 divisors (see below), whose sum is σ = 13420698668280. Its totient is φ = 4473566222758.

The previous prime is 8947132445509. The next prime is 8947132445539. The reversal of 8947132445518 is 8155442317498.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2236783111378 + ... + 2236783111381.

It is an arithmetic number, because the mean of its divisors is an integer number (3355174667070).

Almost surely, 2^{8947132445518} is an apocalyptic number.

8947132445518 is a deficient number, since it is larger than the sum of its proper divisors (4473566222762).

8947132445518 is a wasteful number, since it uses less digits than its factorization.

8947132445518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4473566222761.

The product of its digits is 38707200, while the sum is 61.

The spelling of 8947132445518 in words is "eight trillion, nine hundred forty-seven billion, one hundred thirty-two million, four hundred forty-five thousand, five hundred eighteen".