8544993728947 has 4 divisors (see below), whose sum is σ = 9202300938880. Its totient is φ = 7887686519016.

The previous prime is 8544993728933. The next prime is 8544993728951. The reversal of 8544993728947 is 7498273994458.

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 8544993728947 - 2¹⁹ = 8544993204659 is a prime.

It is a super-2 number, since 2×8544993728947² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8544993728347) 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, 328653604947 + ... + 328653604972.

It is an arithmetic number, because the mean of its divisors is an integer number (2300575234720).

Almost surely, 2^{8544993728947} is an apocalyptic number.

8544993728947 is a deficient number, since it is larger than the sum of its proper divisors (657307209933).

8544993728947 is a wasteful number, since it uses less digits than its factorization.

8544993728947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657307209932.

The product of its digits is 4389396480, while the sum is 79.

The spelling of 8544993728947 in words is "eight trillion, five hundred forty-four billion, nine hundred ninety-three million, seven hundred twenty-eight thousand, nine hundred forty-seven".