165761799466 has 8 divisors (see below), whose sum is σ = 253334071044. Its totient is φ = 81317109120.

The previous prime is 165761799461. The next prime is 165761799491. The reversal of 165761799466 is 664997167561.

It can be written as a sum of positive squares in 2 ways, for example, as 141623516241 + 24138283225 = 376329^2 + 155365^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (165761799461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781895175 + ... + 781895386.

Almost surely, 2^165761799466 is an apocalyptic number.

165761799466 is a deficient number, since it is larger than the sum of its proper divisors (87572271578).

165761799466 is a wasteful number, since it uses less digits than its factorization.

165761799466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563790616.

The product of its digits is 102876480, while the sum is 67.

The spelling of 165761799466 in words is "one hundred sixty-five billion, seven hundred sixty-one million, seven hundred ninety-nine thousand, four hundred sixty-six".