165346984491 has 16 divisors (see below), whose sum is σ = 237448112160. Its totient is φ = 101740504320.

The previous prime is 165346984477. The next prime is 165346984501. The reversal of 165346984491 is 194489643561.

It is not a de Polignac number, because 165346984491 - 2⁵ = 165346984459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165346984471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117351 + ... + 586911.

It is an arithmetic number, because the mean of its divisors is an integer number (14840507010).

Almost surely, 2^165346984491 is an apocalyptic number.

165346984491 is a deficient number, since it is larger than the sum of its proper divisors (72101127669).

165346984491 is a wasteful number, since it uses less digits than its factorization.

165346984491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478606.

The product of its digits is 22394880, while the sum is 60.

The spelling of 165346984491 in words is "one hundred sixty-five billion, three hundred forty-six million, nine hundred eighty-four thousand, four hundred ninety-one".