165853208147 has 16 divisors (see below), whose sum is σ = 187205770080. Its totient is φ = 145548480000.

The previous prime is 165853208119. The next prime is 165853208153. The reversal of 165853208147 is 741802358561.

It is not a de Polignac number, because 165853208147 - 2⁶ = 165853208083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165853208095 and 165853208104.

It is not an unprimeable number, because it can be changed into a prime (165853208107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1707563 + ... + 1802075.

It is an arithmetic number, because the mean of its divisors is an integer number (11700360630).

Almost surely, 2^165853208147 is an apocalyptic number.

165853208147 is a deficient number, since it is larger than the sum of its proper divisors (21352561933).

165853208147 is a wasteful number, since it uses less digits than its factorization.

165853208147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100054.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 165853208147 in words is "one hundred sixty-five billion, eight hundred fifty-three million, two hundred eight thousand, one hundred forty-seven".