165642302785 has 16 divisors (see below), whose sum is σ = 201266343936. Its totient is φ = 130851721728.

The previous prime is 165642302767. The next prime is 165642302797. The reversal of 165642302785 is 587203246561.

It is a cyclic number.

It is not a de Polignac number, because 165642302785 - 2³⁷ = 28203349313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 738112 + ... + 935998.

It is an arithmetic number, because the mean of its divisors is an integer number (12579146496).

Almost surely, 2^165642302785 is an apocalyptic number.

It is an amenable number.

165642302785 is a deficient number, since it is larger than the sum of its proper divisors (35624041151).

165642302785 is a wasteful number, since it uses less digits than its factorization.

165642302785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199992.

The product of its (nonzero) digits is 2419200, while the sum is 49.

The spelling of 165642302785 in words is "one hundred sixty-five billion, six hundred forty-two million, three hundred two thousand, seven hundred eighty-five".