72446480737 has 2 divisors, whose sum is σ = 72446480738. Its totient is φ = 72446480736.

The previous prime is 72446480707. The next prime is 72446480759. The reversal of 72446480737 is 73708464427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53434483281 + 19011997456 = 231159^2 + 137884^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72446480737 is a prime.

It is not a weakly prime, because it can be changed into another prime (72446480707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36223240368 + 36223240369.

It is an arithmetic number, because the mean of its divisors is an integer number (36223240369).

Almost surely, 2^72446480737 is an apocalyptic number.

It is an amenable number.

72446480737 is a deficient number, since it is larger than the sum of its proper divisors (1).

72446480737 is an equidigital number, since it uses as much as digits as its factorization.

72446480737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6322176, while the sum is 52.

The spelling of 72446480737 in words is "seventy-two billion, four hundred forty-six million, four hundred eighty thousand, seven hundred thirty-seven".