165940404695 has 8 divisors (see below), whose sum is σ = 214446061536. Its totient is φ = 122540606496.

The previous prime is 165940404673. The next prime is 165940404727. The reversal of 165940404695 is 596404049561.

165940404695 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165940404695 - 2⁶ = 165940404631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1276464587 + ... + 1276464716.

It is an arithmetic number, because the mean of its divisors is an integer number (26805757692).

Almost surely, 2^165940404695 is an apocalyptic number.

165940404695 is a deficient number, since it is larger than the sum of its proper divisors (48505656841).

165940404695 is a wasteful number, since it uses less digits than its factorization.

165940404695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552929321.

The product of its (nonzero) digits is 4665600, while the sum is 53.

The spelling of 165940404695 in words is "one hundred sixty-five billion, nine hundred forty million, four hundred four thousand, six hundred ninety-five".