165790000855 has 4 divisors (see below), whose sum is σ = 198948001032. Its totient is φ = 132632000680.

The previous prime is 165790000799. The next prime is 165790000897. The reversal of 165790000855 is 558000097561.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 165790000855 - 2¹⁷ = 165789869783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16579000081 + ... + 16579000090.

It is an arithmetic number, because the mean of its divisors is an integer number (49737000258).

Almost surely, 2^165790000855 is an apocalyptic number.

165790000855 is a deficient number, since it is larger than the sum of its proper divisors (33158000177).

165790000855 is an equidigital number, since it uses as much as digits as its factorization.

165790000855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33158000176.

The product of its (nonzero) digits is 378000, while the sum is 46.

The spelling of 165790000855 in words is "one hundred sixty-five billion, seven hundred ninety million, eight hundred fifty-five", and thus it is an aban number.