73973289329 has 16 divisors (see below), whose sum is σ = 77297310720. Its totient is φ = 70734992640.

The previous prime is 73973289317. The next prime is 73973289347. The reversal of 73973289329 is 92398237937.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73973289329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73973289529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360392 + ... + 527094.

It is an arithmetic number, because the mean of its divisors is an integer number (4831081920).

Almost surely, 2^73973289329 is an apocalyptic number.

73973289329 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

73973289329 is a deficient number, since it is larger than the sum of its proper divisors (3324021391).

73973289329 is a wasteful number, since it uses less digits than its factorization.

73973289329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166960.

The product of its digits is 30862944, while the sum is 62.

The spelling of 73973289329 in words is "seventy-three billion, nine hundred seventy-three million, two hundred eighty-nine thousand, three hundred twenty-nine".