165239953166 has 8 divisors (see below), whose sum is σ = 247863601800. Its totient is φ = 82618752568.

The previous prime is 165239953163. The next prime is 165239953189. The reversal of 165239953166 is 661359932561.

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

It is a super-5 number, since 5×165239953166⁵ (a number of 57 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165239953163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432761 + ... + 719556.

It is an arithmetic number, because the mean of its divisors is an integer number (30982950225).

Almost surely, 2^165239953166 is an apocalyptic number.

165239953166 is a deficient number, since it is larger than the sum of its proper divisors (82623648634).

165239953166 is a wasteful number, since it uses less digits than its factorization.

165239953166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224018.

The product of its digits is 7873200, while the sum is 56.

The spelling of 165239953166 in words is "one hundred sixty-five billion, two hundred thirty-nine million, nine hundred fifty-three thousand, one hundred sixty-six".