72481738453 has 2 divisors, whose sum is σ = 72481738454. Its totient is φ = 72481738452.

The previous prime is 72481738447. The next prime is 72481738489. The reversal of 72481738453 is 35483718427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48471306244 + 24010432209 = 220162^2 + 154953^2 .

It is a cyclic number.

It is not a de Polignac number, because 72481738453 - 2⁹ = 72481737941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72481738453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72481738423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36240869226 + 36240869227.

It is an arithmetic number, because the mean of its divisors is an integer number (36240869227).

Almost surely, 2^72481738453 is an apocalyptic number.

It is an amenable number.

72481738453 is a deficient number, since it is larger than the sum of its proper divisors (1).

72481738453 is an equidigital number, since it uses as much as digits as its factorization.

72481738453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4515840, while the sum is 52.

The spelling of 72481738453 in words is "seventy-two billion, four hundred eighty-one million, seven hundred thirty-eight thousand, four hundred fifty-three".