165156514640405 has 8 divisors (see below), whose sum is σ = 200040040163232. Its totient is φ = 130890396649168.

The previous prime is 165156514640401. The next prime is 165156514640407. The reversal of 165156514640405 is 504046415651561.

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

It is a cyclic number.

It is not a de Polignac number, because 165156514640405 - 2² = 165156514640401 is a prime.

It is a super-2 number, since 2×165156514640405² (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 (165156514640401) 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, 154351882307 + ... + 154351883376.

It is an arithmetic number, because the mean of its divisors is an integer number (25005005020404).

Almost surely, 2^{165156514640405} is an apocalyptic number.

It is an amenable number.

165156514640405 is a deficient number, since it is larger than the sum of its proper divisors (34883525522827).

165156514640405 is a wasteful number, since it uses less digits than its factorization.

165156514640405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308703765795.

The product of its (nonzero) digits is 8640000, while the sum is 53.

The spelling of 165156514640405 in words is "one hundred sixty-five trillion, one hundred fifty-six billion, five hundred fourteen million, six hundred forty thousand, four hundred five".