72172712367503 has 8 divisors (see below), whose sum is σ = 78738976498896. Its totient is φ = 65607299646400.

The previous prime is 72172712367461. The next prime is 72172712367551. The reversal of 72172712367503 is 30576321727127.

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

It is a cyclic number.

It is not a de Polignac number, because 72172712367503 - 2¹⁸ = 72172712105359 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 (72172712367583) 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, 212675318 + ... + 213014403.

It is an arithmetic number, because the mean of its divisors is an integer number (9842372062362).

Almost surely, 2^{72172712367503} is an apocalyptic number.

72172712367503 is a deficient number, since it is larger than the sum of its proper divisors (6566264131393).

72172712367503 is a wasteful number, since it uses less digits than its factorization.

72172712367503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425705145.

The product of its (nonzero) digits is 5186160, while the sum is 53.

The spelling of 72172712367503 in words is "seventy-two trillion, one hundred seventy-two billion, seven hundred twelve million, three hundred sixty-seven thousand, five hundred three".