165707143643 has 8 divisors (see below), whose sum is σ = 166615105296. Its totient is φ = 164800339200.

The previous prime is 165707143621. The next prime is 165707143703. The reversal of 165707143643 is 346341707561.

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 165707143643 - 2⁶ = 165707143579 is a prime.

It is a super-2 number, since 2×165707143643² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165707143843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1346 + ... + 575687.

It is an arithmetic number, because the mean of its divisors is an integer number (20826888162).

Almost surely, 2^165707143643 is an apocalyptic number.

165707143643 is a deficient number, since it is larger than the sum of its proper divisors (907961653).

165707143643 is a wasteful number, since it uses less digits than its factorization.

165707143643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578605.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 165707143643 in words is "one hundred sixty-five billion, seven hundred seven million, one hundred forty-three thousand, six hundred forty-three".