72402501067517 has 2 divisors, whose sum is σ = 72402501067518. Its totient is φ = 72402501067516.

The previous prime is 72402501067489. The next prime is 72402501067579. The reversal of 72402501067517 is 71576010520427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72350777117476 + 51723950041 = 8505926^2 + 227429^2 .

It is a cyclic number.

It is not a de Polignac number, because 72402501067517 - 2²⁰ = 72402500018941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72402501067717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36201250533758 + 36201250533759.

It is an arithmetic number, because the mean of its divisors is an integer number (36201250533759).

Almost surely, 2^{72402501067517} is an apocalyptic number.

It is an amenable number.

72402501067517 is a deficient number, since it is larger than the sum of its proper divisors (1).

72402501067517 is an equidigital number, since it uses as much as digits as its factorization.

72402501067517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 823200, while the sum is 47.

The spelling of 72402501067517 in words is "seventy-two trillion, four hundred two billion, five hundred one million, sixty-seven thousand, five hundred seventeen".