72603841601 has 2 divisors, whose sum is σ = 72603841602. Its totient is φ = 72603841600.

The previous prime is 72603841579. The next prime is 72603841643. The reversal of 72603841601 is 10614830627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61380558001 + 11223283600 = 247751^2 + 105940^2 .

It is a cyclic number.

It is not a de Polignac number, because 72603841601 - 2⁶ = 72603841537 is a prime.

It is not a weakly prime, because it can be changed into another prime (72603841901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36301920800 + 36301920801.

It is an arithmetic number, because the mean of its divisors is an integer number (36301920801).

Almost surely, 2^72603841601 is an apocalyptic number.

It is an amenable number.

72603841601 is a deficient number, since it is larger than the sum of its proper divisors (1).

72603841601 is an equidigital number, since it uses as much as digits as its factorization.

72603841601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 72603841601 in words is "seventy-two billion, six hundred three million, eight hundred forty-one thousand, six hundred one".