134409491173 has 2 divisors, whose sum is σ = 134409491174. Its totient is φ = 134409491172.

The previous prime is 134409491159. The next prime is 134409491179. The reversal of 134409491173 is 371194904431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74385471169 + 60024020004 = 272737^2 + 244998^2 .

It is a cyclic number.

It is not a de Polignac number, because 134409491173 - 2²¹ = 134407394021 is a prime.

It is a super-2 number, since 2×134409491173² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134409491179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67204745586 + 67204745587.

It is an arithmetic number, because the mean of its divisors is an integer number (67204745587).

Almost surely, 2^134409491173 is an apocalyptic number.

It is an amenable number.

134409491173 is a deficient number, since it is larger than the sum of its proper divisors (1).

134409491173 is an equidigital number, since it uses as much as digits as its factorization.

134409491173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 134409491173 in words is "one hundred thirty-four billion, four hundred nine million, four hundred ninety-one thousand, one hundred seventy-three".