165220501622051 has 8 divisors (see below), whose sum is σ = 166273730502624. Its totient is φ = 164167283741760.

The previous prime is 165220501622003. The next prime is 165220501622087. The reversal of 165220501622051 is 150226105022561.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165220501622051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165220501621996 and 165220501622014.

It is not an unprimeable number, because it can be changed into a prime (165220501624051) 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, 28514231 + ... + 33815711.

It is an arithmetic number, because the mean of its divisors is an integer number (20784216312828).

Almost surely, 2^{165220501622051} is an apocalyptic number.

165220501622051 is a deficient number, since it is larger than the sum of its proper divisors (1053228880573).

165220501622051 is a wasteful number, since it uses less digits than its factorization.

165220501622051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5500141.

The product of its (nonzero) digits is 72000, while the sum is 38.

The spelling of 165220501622051 in words is "one hundred sixty-five trillion, two hundred twenty billion, five hundred one million, six hundred twenty-two thousand, fifty-one".