9172942847997 has 32 divisors (see below), whose sum is σ = 12687207603840. Its totient is φ = 5891234764800.

The previous prime is 9172942847899. The next prime is 9172942848037. The reversal of 9172942847997 is 7997482492719.

It is not a de Polignac number, because 9172942847997 - 2⁸ = 9172942847741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9172942846997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3607663 + ... + 5600099.

It is an arithmetic number, because the mean of its divisors is an integer number (396475237620).

Almost surely, 2^{9172942847997} is an apocalyptic number.

It is an amenable number.

9172942847997 is a deficient number, since it is larger than the sum of its proper divisors (3514264755843).

9172942847997 is a wasteful number, since it uses less digits than its factorization.

9172942847997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992973.

The product of its digits is 1152216576, while the sum is 78.

The spelling of 9172942847997 in words is "nine trillion, one hundred seventy-two billion, nine hundred forty-two million, eight hundred forty-seven thousand, nine hundred ninety-seven".