6166033561 has 2 divisors, whose sum is σ = 6166033562. Its totient is φ = 6166033560.

The previous prime is 6166033513. The next prime is 6166033567. The reversal of 6166033561 is 1653306616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5625750025 + 540283536 = 75005^2 + 23244^2 .

It is a cyclic number.

It is not a de Polignac number, because 6166033561 - 2²¹ = 6163936409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6166033561.

It is not a weakly prime, because it can be changed into another prime (6166033567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3083016780 + 3083016781.

It is an arithmetic number, because the mean of its divisors is an integer number (3083016781).

Almost surely, 2^6166033561 is an apocalyptic number.

It is an amenable number.

6166033561 is a deficient number, since it is larger than the sum of its proper divisors (1).

6166033561 is an equidigital number, since it uses as much as digits as its factorization.

6166033561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 6166033561 is about 78524.0954166299. The cubic root of 6166033561 is about 1833.7295971611.

The spelling of 6166033561 in words is "six billion, one hundred sixty-six million, thirty-three thousand, five hundred sixty-one".