72402501067717 has 2 divisors, whose sum is σ = 72402501067718. Its totient is φ = 72402501067716.

The previous prime is 72402501067703. The next prime is 72402501067733. The reversal of 72402501067717 is 71776010520427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71026363265796 + 1376137801921 = 8427714^2 + 1173089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72402501067717 is a prime.

It is a super-2 number, since 2×72402501067717² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72402501067777) 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 as a sum of consecutive naturals, namely, 36201250533858 + 36201250533859.

It is an arithmetic number, because the mean of its divisors is an integer number (36201250533859).

Almost surely, 2^{72402501067717} is an apocalyptic number.

It is an amenable number.

72402501067717 is a deficient number, since it is larger than the sum of its proper divisors (1).

72402501067717 is an equidigital number, since it uses as much as digits as its factorization.

72402501067717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152480, while the sum is 49.

The spelling of 72402501067717 in words is "seventy-two trillion, four hundred two billion, five hundred one million, sixty-seven thousand, seven hundred seventeen".