72540341210517 has 16 divisors (see below), whose sum is σ = 98241682177152. Its totient is φ = 47601821738240.

The previous prime is 72540341210503. The next prime is 72540341210543. The reversal of 72540341210517 is 71501214304527.

It is a cyclic number.

It is not a de Polignac number, because 72540341210517 - 2¹⁰ = 72540341209493 is a prime.

It is a super-2 number, since 2×72540341210517² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72540341210587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275853168 + ... + 276116009.

It is an arithmetic number, because the mean of its divisors is an integer number (6140105136072).

Almost surely, 2^{72540341210517} is an apocalyptic number.

It is an amenable number.

72540341210517 is a deficient number, since it is larger than the sum of its proper divisors (25701340966635).

72540341210517 is a wasteful number, since it uses less digits than its factorization.

72540341210517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551969868.

The product of its (nonzero) digits is 235200, while the sum is 42.

The spelling of 72540341210517 in words is "seventy-two trillion, five hundred forty billion, three hundred forty-one million, two hundred ten thousand, five hundred seventeen".