30603722561 has 2 divisors, whose sum is σ = 30603722562. Its totient is φ = 30603722560.

The previous prime is 30603722549. The next prime is 30603722687. The reversal of 30603722561 is 16522730603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18722722561 + 11881000000 = 136831^2 + 109000^2 .

It is a cyclic number.

It is not a de Polignac number, because 30603722561 - 2¹⁰ = 30603721537 is a prime.

It is not a weakly prime, because it can be changed into another prime (30603724561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15301861280 + 15301861281.

It is an arithmetic number, because the mean of its divisors is an integer number (15301861281).

Almost surely, 2^30603722561 is an apocalyptic number.

It is an amenable number.

30603722561 is a deficient number, since it is larger than the sum of its proper divisors (1).

30603722561 is an equidigital number, since it uses as much as digits as its factorization.

30603722561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 35.

The spelling of 30603722561 in words is "thirty billion, six hundred three million, seven hundred twenty-two thousand, five hundred sixty-one".