72173303589 has 4 divisors (see below), whose sum is σ = 96231071456. Its totient is φ = 48115535724.

The previous prime is 72173303581. The next prime is 72173303597. The reversal of 72173303589 is 98530337127.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (72173303581) and next prime (72173303597).

It is not a de Polignac number, because 72173303589 - 2³ = 72173303581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72173303581) 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, 12028883929 + ... + 12028883934.

It is an arithmetic number, because the mean of its divisors is an integer number (24057767864).

Almost surely, 2^72173303589 is an apocalyptic number.

It is an amenable number.

72173303589 is a deficient number, since it is larger than the sum of its proper divisors (24057767867).

72173303589 is a wasteful number, since it uses less digits than its factorization.

72173303589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24057767866.

The product of its (nonzero) digits is 952560, while the sum is 48.

The spelling of 72173303589 in words is "seventy-two billion, one hundred seventy-three million, three hundred three thousand, five hundred eighty-nine".