165156550610111 has 8 divisors (see below), whose sum is σ = 165362222986560. Its totient is φ = 164950881996672.

The previous prime is 165156550609993. The next prime is 165156550610123. The reversal of 165156550610111 is 111016055651561.

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-165156550610111 is a prime.

It is a super-2 number, since 2×165156550610111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165156550610131) 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, 92688851 + ... + 94453883.

It is an arithmetic number, because the mean of its divisors is an integer number (20670277873320).

Almost surely, 2^{165156550610111} is an apocalyptic number.

165156550610111 is a deficient number, since it is larger than the sum of its proper divisors (205672376449).

165156550610111 is a wasteful number, since it uses less digits than its factorization.

165156550610111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881505.

The product of its (nonzero) digits is 135000, while the sum is 44.

The spelling of 165156550610111 in words is "one hundred sixty-five trillion, one hundred fifty-six billion, five hundred fifty million, six hundred ten thousand, one hundred eleven".