9730134721873 has 4 divisors (see below), whose sum is σ = 9759007525540. Its totient is φ = 9701261918208.

The previous prime is 9730134721871. The next prime is 9730134721933. The reversal of 9730134721873 is 3781274310379.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3331749294864 + 6398385427009 = 1825308^2 + 2529503^2 .

It is a cyclic number.

It is not a de Polignac number, because 9730134721873 - 2¹ = 9730134721871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9730134721871) 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, 14436401328 + ... + 14436402001.

It is an arithmetic number, because the mean of its divisors is an integer number (2439751881385).

Almost surely, 2^{9730134721873} is an apocalyptic number.

It is an amenable number.

9730134721873 is a deficient number, since it is larger than the sum of its proper divisors (28872803667).

9730134721873 is a wasteful number, since it uses less digits than its factorization.

9730134721873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28872803666.

The product of its (nonzero) digits is 5334336, while the sum is 55.

The spelling of 9730134721873 in words is "nine trillion, seven hundred thirty billion, one hundred thirty-four million, seven hundred twenty-one thousand, eight hundred seventy-three".