165620120633166 has 32 divisors (see below), whose sum is σ = 336671412962976. Its totient is φ = 54301516992000.

The previous prime is 165620120633161. The next prime is 165620120633173. The reversal of 165620120633166 is 661336021026561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165620120633161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227977786 + ... + 228703106.

It is an arithmetic number, because the mean of its divisors is an integer number (10520981655093).

Almost surely, 2^{165620120633166} is an apocalyptic number.

165620120633166 is an abundant number, since it is smaller than the sum of its proper divisors (171051292329810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165620120633166 is a wasteful number, since it uses less digits than its factorization.

165620120633166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349268.

The product of its (nonzero) digits is 1399680, while the sum is 48.

The spelling of 165620120633166 in words is "one hundred sixty-five trillion, six hundred twenty billion, one hundred twenty million, six hundred thirty-three thousand, one hundred sixty-six".