165200299019 has 4 divisors (see below), whose sum is σ = 188800341744. Its totient is φ = 141600256296.

The previous prime is 165200298973. The next prime is 165200299051. The reversal of 165200299019 is 910992002561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 165200299019 - 2¹² = 165200294923 is a prime.

It is a super-2 number, since 2×165200299019² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165200299079) 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 in 3 ways as a sum of consecutive naturals, for example, 11800021352 + ... + 11800021365.

It is an arithmetic number, because the mean of its divisors is an integer number (47200085436).

Almost surely, 2^165200299019 is an apocalyptic number.

165200299019 is a deficient number, since it is larger than the sum of its proper divisors (23600042725).

165200299019 is an equidigital number, since it uses as much as digits as its factorization.

165200299019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23600042724.

The product of its (nonzero) digits is 87480, while the sum is 44.

The spelling of 165200299019 in words is "one hundred sixty-five billion, two hundred million, two hundred ninety-nine thousand, nineteen".