72264013517 has 2 divisors, whose sum is σ = 72264013518. Its totient is φ = 72264013516.

The previous prime is 72264013511. The next prime is 72264013649. The reversal of 72264013517 is 71531046227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69988818916 + 2275194601 = 264554^2 + 47699^2 .

It is a cyclic number.

It is not a de Polignac number, because 72264013517 - 2¹⁴ = 72263997133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72264013511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36132006758 + 36132006759.

It is an arithmetic number, because the mean of its divisors is an integer number (36132006759).

Almost surely, 2^72264013517 is an apocalyptic number.

It is an amenable number.

72264013517 is a deficient number, since it is larger than the sum of its proper divisors (1).

72264013517 is an equidigital number, since it uses as much as digits as its factorization.

72264013517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 72264013517 in words is "seventy-two billion, two hundred sixty-four million, thirteen thousand, five hundred seventeen".