72173073067 has 8 divisors (see below), whose sum is σ = 75974976000. Its totient is φ = 68371502184.

The previous prime is 72173073047. The next prime is 72173073101. The reversal of 72173073067 is 76037037127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72173073067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72173073017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 451434 + ... + 590032.

It is an arithmetic number, because the mean of its divisors is an integer number (9496872000).

Almost surely, 2^72173073067 is an apocalyptic number.

72173073067 is a deficient number, since it is larger than the sum of its proper divisors (3801902933).

72173073067 is a wasteful number, since it uses less digits than its factorization.

72173073067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166025.

The product of its (nonzero) digits is 259308, while the sum is 43.

The spelling of 72173073067 in words is "seventy-two billion, one hundred seventy-three million, seventy-three thousand, sixty-seven".