165111157417399 has 2 divisors, whose sum is σ = 165111157417400. Its totient is φ = 165111157417398.

The previous prime is 165111157417373. The next prime is 165111157417483. The reversal of 165111157417399 is 993714751111561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165111157417399 - 2²⁵ = 165111123862967 is a prime.

It is a super-2 number, since 2×165111157417399² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165111157411399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82555578708699 + 82555578708700.

It is an arithmetic number, because the mean of its divisors is an integer number (82555578708700).

Almost surely, 2^{165111157417399} is an apocalyptic number.

165111157417399 is a deficient number, since it is larger than the sum of its proper divisors (1).

165111157417399 is an equidigital number, since it uses as much as digits as its factorization.

165111157417399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7144200, while the sum is 61.

The spelling of 165111157417399 in words is "one hundred sixty-five trillion, one hundred eleven billion, one hundred fifty-seven million, four hundred seventeen thousand, three hundred ninety-nine".