165950152166 has 4 divisors (see below), whose sum is σ = 248925228252. Its totient is φ = 82975076082.

The previous prime is 165950152141. The next prime is 165950152171. The reversal of 165950152166 is 661251059561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 661251059561 = 167 ⋅3959587183.

It is a self number, because there is not a number n which added to its sum of digits gives 165950152166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41487538040 + ... + 41487538043.

It is an arithmetic number, because the mean of its divisors is an integer number (62231307063).

Almost surely, 2^165950152166 is an apocalyptic number.

165950152166 is a deficient number, since it is larger than the sum of its proper divisors (82975076086).

165950152166 is an equidigital number, since it uses as much as digits as its factorization.

165950152166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82975076085.

The product of its (nonzero) digits is 486000, while the sum is 47.

The spelling of 165950152166 in words is "one hundred sixty-five billion, nine hundred fifty million, one hundred fifty-two thousand, one hundred sixty-six".