165516141898 has 8 divisors (see below), whose sum is σ = 248899589892. Its totient is φ = 82549611936.

The previous prime is 165516141881. The next prime is 165516141899. The reversal of 165516141898 is 898141615561.

It can be written as a sum of positive squares in 2 ways, for example, as 165513089889 + 3052009 = 406833^2 + 1747^2 .

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 (165516141899) 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, 104228515 + ... + 104230102.

Almost surely, 2^165516141898 is an apocalyptic number.

165516141898 is a deficient number, since it is larger than the sum of its proper divisors (83383447994).

165516141898 is a wasteful number, since it uses less digits than its factorization.

165516141898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208459016.

The product of its digits is 2073600, while the sum is 55.

The spelling of 165516141898 in words is "one hundred sixty-five billion, five hundred sixteen million, one hundred forty-one thousand, eight hundred ninety-eight".