165366605415 has 32 divisors (see below), whose sum is σ = 288673920000. Its totient is φ = 80168296320.

The previous prime is 165366605353. The next prime is 165366605419. The reversal of 165366605415 is 514506663561.

It is not a de Polignac number, because 165366605415 - 2⁹ = 165366604903 is a prime.

It is a super-2 number, since 2×165366605415² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165366605419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1463361 + ... + 1572309.

It is an arithmetic number, because the mean of its divisors is an integer number (9021060000).

Almost surely, 2^165366605415 is an apocalyptic number.

165366605415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165366605415 is a deficient number, since it is larger than the sum of its proper divisors (123307314585).

165366605415 is a wasteful number, since it uses less digits than its factorization.

165366605415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118167.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 165366605415 in words is "one hundred sixty-five billion, three hundred sixty-six million, six hundred five thousand, four hundred fifteen".