165575544970 has 32 divisors (see below), whose sum is σ = 326832454656. Its totient is φ = 59894049600.

The previous prime is 165575544961. The next prime is 165575544977. The reversal of 165575544970 is 79445575561.

It is a super-2 number, since 2×165575544970² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165575544977) 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, 3919389 + ... + 3961408.

It is an arithmetic number, because the mean of its divisors is an integer number (10213514208).

Almost surely, 2^165575544970 is an apocalyptic number.

165575544970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165575544970 is a deficient number, since it is larger than the sum of its proper divisors (161256909686).

165575544970 is a wasteful number, since it uses less digits than its factorization.

165575544970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7881006.

The product of its (nonzero) digits is 26460000, while the sum is 58.

The spelling of 165575544970 in words is "one hundred sixty-five billion, five hundred seventy-five million, five hundred forty-four thousand, nine hundred seventy".