165962494217 has 12 divisors (see below), whose sum is σ = 180613972800. Its totient is φ = 152426287728.

The previous prime is 165962494199. The next prime is 165962494219. The reversal of 165962494217 is 712494269561.

It is not a de Polignac number, because 165962494217 - 2¹² = 165962490121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165962494219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2433773 + ... + 2501034.

It is an arithmetic number, because the mean of its divisors is an integer number (15051164400).

Almost surely, 2^165962494217 is an apocalyptic number.

It is an amenable number.

165962494217 is a deficient number, since it is larger than the sum of its proper divisors (14651478583).

165962494217 is a wasteful number, since it uses less digits than its factorization.

165962494217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4935032 (or 4935019 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The spelling of 165962494217 in words is "one hundred sixty-five billion, nine hundred sixty-two million, four hundred ninety-four thousand, two hundred seventeen".