165000040263 has 6 divisors (see below), whose sum is σ = 238333391504. Its totient is φ = 110000026836.

The previous prime is 165000040253. The next prime is 165000040343. The reversal of 165000040263 is 362040000561.

165000040263 is a `hidden beast` number, since 1 + 650 + 0 + 0 + 0 + 4 + 0 + 2 + 6 + 3 = 666.

It is not a de Polignac number, because 165000040263 - 2¹⁴ = 165000023879 is a prime.

It is a super-2 number, since 2×165000040263² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165000040213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9166668895 + ... + 9166668912.

Almost surely, 2^165000040263 is an apocalyptic number.

165000040263 is a deficient number, since it is larger than the sum of its proper divisors (73333351241).

165000040263 is a wasteful number, since it uses less digits than its factorization.

165000040263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18333337813 (or 18333337810 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The spelling of 165000040263 in words is "one hundred sixty-five billion, forty thousand, two hundred sixty-three".