134591569949 has 2 divisors, whose sum is σ = 134591569950. Its totient is φ = 134591569948.

The previous prime is 134591569843. The next prime is 134591569969. The reversal of 134591569949 is 949965195431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90898029049 + 43693540900 = 301493^2 + 209030^2 .

It is a cyclic number.

It is not a de Polignac number, because 134591569949 - 2²⁴ = 134574792733 is a prime.

It is a super-2 number, since 2×134591569949² (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 (134591569969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67295784974 + 67295784975.

It is an arithmetic number, because the mean of its divisors is an integer number (67295784975).

Almost surely, 2^134591569949 is an apocalyptic number.

It is an amenable number.

134591569949 is a deficient number, since it is larger than the sum of its proper divisors (1).

134591569949 is an equidigital number, since it uses as much as digits as its factorization.

134591569949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47239200, while the sum is 65.

The spelling of 134591569949 in words is "one hundred thirty-four billion, five hundred ninety-one million, five hundred sixty-nine thousand, nine hundred forty-nine".