134409491161 has 9 divisors (see below), whose sum is σ = 147743790943. Its totient is φ = 122186780320.

The previous prime is 134409491159. The next prime is 134409491173. The reversal of 134409491161 is 161194904431.

The square root of 134409491161 is 366619.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 94329451161 + 40080040000 = 307131^2 + 200200^2 .

It is not a de Polignac number, because 134409491161 - 2¹ = 134409491159 is a prime.

It is a super-3 number, since 3×134409491161³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134409491191) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4016145 + ... + 4049473.

Almost surely, 2^134409491161 is an apocalyptic number.

134409491161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

134409491161 is the 366619-th square number.

134409491161 is the 183310-th centered octagonal number.

It is an amenable number.

134409491161 is a deficient number, since it is larger than the sum of its proper divisors (13334299782).

134409491161 is an frugal number, since it uses more digits than its factorization.

134409491161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66680 (or 33340 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 134409491161 in words is "one hundred thirty-four billion, four hundred nine million, four hundred ninety-one thousand, one hundred sixty-one".