72267503369 has 2 divisors, whose sum is σ = 72267503370. Its totient is φ = 72267503368.

The previous prime is 72267503339. The next prime is 72267503389. The reversal of 72267503369 is 96330576227.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70271647744 + 1995855625 = 265088^2 + 44675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72267503369 is a prime.

It is a super-2 number, since 2×72267503369² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (72267503339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36133751684 + 36133751685.

It is an arithmetic number, because the mean of its divisors is an integer number (36133751685).

Almost surely, 2^72267503369 is an apocalyptic number.

It is an amenable number.

72267503369 is a deficient number, since it is larger than the sum of its proper divisors (1).

72267503369 is an equidigital number, since it uses as much as digits as its factorization.

72267503369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2857680, while the sum is 50.

The spelling of 72267503369 in words is "seventy-two billion, two hundred sixty-seven million, five hundred three thousand, three hundred sixty-nine".