165605015454151 has 16 divisors (see below), whose sum is σ = 215811060865344. Its totient is φ = 123320606206464.

The previous prime is 165605015454133. The next prime is 165605015454173. The reversal of 165605015454151 is 151454510506561.

It is a cyclic number.

It is not a de Polignac number, because 165605015454151 - 2¹⁹ = 165605014929863 is a prime.

It is a super-2 number, since 2×165605015454151² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165605015454095 and 165605015454104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165605015454121) 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, 53524567120 + ... + 53524570213.

It is an arithmetic number, because the mean of its divisors is an integer number (13488191304084).

Almost surely, 2^{165605015454151} is an apocalyptic number.

165605015454151 is a deficient number, since it is larger than the sum of its proper divisors (50206045411193).

165605015454151 is a wasteful number, since it uses less digits than its factorization.

165605015454151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107049137370.

The product of its (nonzero) digits is 1800000, while the sum is 49.

The spelling of 165605015454151 in words is "one hundred sixty-five trillion, six hundred five billion, fifteen million, four hundred fifty-four thousand, one hundred fifty-one".