30575286661 has 2 divisors, whose sum is σ = 30575286662. Its totient is φ = 30575286660.

The previous prime is 30575286631. The next prime is 30575286667. The reversal of 30575286661 is 16668257503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28970082436 + 1605204225 = 170206^2 + 40065^2 .

It is a cyclic number.

It is not a de Polignac number, because 30575286661 - 2¹³ = 30575278469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30575286667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15287643330 + 15287643331.

It is an arithmetic number, because the mean of its divisors is an integer number (15287643331).

Almost surely, 2^30575286661 is an apocalyptic number.

It is an amenable number.

30575286661 is a deficient number, since it is larger than the sum of its proper divisors (1).

30575286661 is an equidigital number, since it uses as much as digits as its factorization.

30575286661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 30575286661 in words is "thirty billion, five hundred seventy-five million, two hundred eighty-six thousand, six hundred sixty-one".