6166551610399 has 2 divisors, whose sum is σ = 6166551610400. Its totient is φ = 6166551610398.

The previous prime is 6166551610321. The next prime is 6166551610411. The reversal of 6166551610399 is 9930161556616.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6166551610399 - 2⁹ = 6166551609887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6166551610319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3083275805199 + 3083275805200.

It is an arithmetic number, because the mean of its divisors is an integer number (3083275805200).

Almost surely, 2^{6166551610399} is an apocalyptic number.

6166551610399 is a deficient number, since it is larger than the sum of its proper divisors (1).

6166551610399 is an equidigital number, since it uses as much as digits as its factorization.

6166551610399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7873200, while the sum is 58.

The spelling of 6166551610399 in words is "six trillion, one hundred sixty-six billion, five hundred fifty-one million, six hundred ten thousand, three hundred ninety-nine".