72172712417303 has 16 divisors (see below), whose sum is σ = 76247348268000. Its totient is φ = 68125786542720.

The previous prime is 72172712417257. The next prime is 72172712417389. The reversal of 72172712417303 is 30371421727127.

It is a cyclic number.

It is not a de Polignac number, because 72172712417303 - 2²² = 72172708222999 is a prime.

It is a super-2 number, since 2×72172712417303² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72172712414303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23899313 + ... + 26749253.

It is an arithmetic number, because the mean of its divisors is an integer number (4765459266750).

Almost surely, 2^{72172712417303} is an apocalyptic number.

72172712417303 is a deficient number, since it is larger than the sum of its proper divisors (4074635850697).

72172712417303 is a wasteful number, since it uses less digits than its factorization.

72172712417303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854802.

The product of its (nonzero) digits is 691488, while the sum is 47.

The spelling of 72172712417303 in words is "seventy-two trillion, one hundred seventy-two billion, seven hundred twelve million, four hundred seventeen thousand, three hundred three".