33530461661 has 2 divisors, whose sum is σ = 33530461662. Its totient is φ = 33530461660.

The previous prime is 33530461621. The next prime is 33530461667. The reversal of 33530461661 is 16616403533.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33426808900 + 103652761 = 182830^2 + 10181^2 .

It is a cyclic number.

It is not a de Polignac number, because 33530461661 - 2³⁰ = 32456719837 is a prime.

It is a super-2 number, since 2×33530461661² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33530461667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16765230830 + 16765230831.

It is an arithmetic number, because the mean of its divisors is an integer number (16765230831).

Almost surely, 2^33530461661 is an apocalyptic number.

It is an amenable number.

33530461661 is a deficient number, since it is larger than the sum of its proper divisors (1).

33530461661 is an equidigital number, since it uses as much as digits as its factorization.

33530461661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 38.

The spelling of 33530461661 in words is "thirty-three billion, five hundred thirty million, four hundred sixty-one thousand, six hundred sixty-one".