165065491863 has 12 divisors (see below), whose sum is σ = 238490676840. Its totient is φ = 110014702416.

The previous prime is 165065491861. The next prime is 165065491883. The reversal of 165065491863 is 368194560561.

165065491863 is a `hidden beast` number, since 1 + 6 + 506 + 54 + 9 + 1 + 86 + 3 = 666.

It is not a de Polignac number, because 165065491863 - 2¹ = 165065491861 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165065491861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2377108 + ... + 2445561.

It is an arithmetic number, because the mean of its divisors is an integer number (19874223070).

Almost surely, 2^165065491863 is an apocalyptic number.

165065491863 is a deficient number, since it is larger than the sum of its proper divisors (73425184977).

165065491863 is a wasteful number, since it uses less digits than its factorization.

165065491863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4826478 (or 4826475 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 165065491863 in words is "one hundred sixty-five billion, sixty-five million, four hundred ninety-one thousand, eight hundred sixty-three".