72267503813 has 2 divisors, whose sum is σ = 72267503814. Its totient is φ = 72267503812.

The previous prime is 72267503783. The next prime is 72267503821. The reversal of 72267503813 is 31830576227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66472183684 + 5795320129 = 257822^2 + 76127^2 .

It is an emirp because it is prime and its reverse (31830576227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72267503813 - 2¹⁰ = 72267502789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72267503213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36133751906 + 36133751907.

It is an arithmetic number, because the mean of its divisors is an integer number (36133751907).

Almost surely, 2^72267503813 is an apocalyptic number.

It is an amenable number.

72267503813 is a deficient number, since it is larger than the sum of its proper divisors (1).

72267503813 is an equidigital number, since it uses as much as digits as its factorization.

72267503813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 72267503813 in words is "seventy-two billion, two hundred sixty-seven million, five hundred three thousand, eight hundred thirteen".