961000000000169 has 4 divisors (see below), whose sum is σ = 961000081489620. Its totient is φ = 960999918510720.

The previous prime is 961000000000141. The next prime is 961000000000193.

It is a happy number.

961000000000169 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 940783852840000 + 20216147160169 = 30672200^2 + 4496237^2 .

It is a cyclic number.

It is not a de Polignac number, because 961000000000169 - 2²⁴ = 960999983222953 is a prime.

It is a super-2 number, since 2×961000000000169² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (961000000000109) 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, 19289312 + ... + 47896529.

It is an arithmetic number, because the mean of its divisors is an integer number (240250020372405).

Almost surely, 2^{961000000000169} is an apocalyptic number.

It is an amenable number.

961000000000169 is a deficient number, since it is larger than the sum of its proper divisors (81489451).

961000000000169 is a wasteful number, since it uses less digits than its factorization.

961000000000169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81489450.

The product of its (nonzero) digits is 2916, while the sum is 32.

It can be divided in two parts, 961000000000 and 169, that added together give a palindrome (961000000169).

The spelling of 961000000000169 in words is "nine hundred sixty-one trillion, one hundred sixty-nine", and thus it is an aban number.