6166551610601 has 2 divisors, whose sum is σ = 6166551610602. Its totient is φ = 6166551610600.

The previous prime is 6166551610573. The next prime is 6166551610691. The reversal of 6166551610601 is 1060161556616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3341291526400 + 2825260084201 = 1827920^2 + 1680851^2 .

It is a cyclic number.

It is not a de Polignac number, because 6166551610601 - 2¹⁰ = 6166551609577 is a prime.

It is not a weakly prime, because it can be changed into another prime (6166551610691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3083275805300 + 3083275805301.

It is an arithmetic number, because the mean of its divisors is an integer number (3083275805301).

Almost surely, 2^{6166551610601} is an apocalyptic number.

It is an amenable number.

6166551610601 is a deficient number, since it is larger than the sum of its proper divisors (1).

6166551610601 is an equidigital number, since it uses as much as digits as its factorization.

6166551610601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 6166551610601 in words is "six trillion, one hundred sixty-six billion, five hundred fifty-one million, six hundred ten thousand, six hundred one".