165435966527 has 16 divisors (see below), whose sum is σ = 187595520000. Its totient is φ = 144628952544.

The previous prime is 165435966523. The next prime is 165435966533. The reversal of 165435966527 is 725669534561.

It is a cyclic number.

It is not a de Polignac number, because 165435966527 - 2² = 165435966523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165435966523) 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, 729974 + ... + 929372.

It is an arithmetic number, because the mean of its divisors is an integer number (11724720000).

Almost surely, 2^165435966527 is an apocalyptic number.

165435966527 is a deficient number, since it is larger than the sum of its proper divisors (22159553473).

165435966527 is a wasteful number, since it uses less digits than its factorization.

165435966527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202790.

The product of its digits is 40824000, while the sum is 59.

The spelling of 165435966527 in words is "one hundred sixty-five billion, four hundred thirty-five million, nine hundred sixty-six thousand, five hundred twenty-seven".