981240116169 has 4 divisors (see below), whose sum is σ = 1308320154896. Its totient is φ = 654160077444.

The previous prime is 981240116167. The next prime is 981240116177. The reversal of 981240116169 is 961611042189.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 981240116169 - 2¹ = 981240116167 is a prime.

It is a super-2 number, since 2×981240116169² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981240116167) 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, 163540019359 + ... + 163540019364.

It is an arithmetic number, because the mean of its divisors is an integer number (327080038724).

Almost surely, 2^981240116169 is an apocalyptic number.

It is an amenable number.

981240116169 is a deficient number, since it is larger than the sum of its proper divisors (327080038727).

981240116169 is a wasteful number, since it uses less digits than its factorization.

981240116169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327080038726.

The product of its (nonzero) digits is 186624, while the sum is 48.

The spelling of 981240116169 in words is "nine hundred eighty-one billion, two hundred forty million, one hundred sixteen thousand, one hundred sixty-nine".