165775424275 has 12 divisors (see below), whose sum is σ = 210342028072. Its totient is φ = 129536144640.

The previous prime is 165775424219. The next prime is 165775424281. The reversal of 165775424275 is 572424577561.

It is not a de Polignac number, because 165775424275 - 2⁹ = 165775423763 is a prime.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77103774 + ... + 77105923.

Almost surely, 2^165775424275 is an apocalyptic number.

165775424275 is a deficient number, since it is larger than the sum of its proper divisors (44566603797).

165775424275 is a wasteful number, since it uses less digits than its factorization.

165775424275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154209750 (or 154209745 counting only the distinct ones).

The product of its digits is 16464000, while the sum is 55.

The spelling of 165775424275 in words is "one hundred sixty-five billion, seven hundred seventy-five million, four hundred twenty-four thousand, two hundred seventy-five".