134404431253513 has 2 divisors, whose sum is σ = 134404431253514. Its totient is φ = 134404431253512.

The previous prime is 134404431253501. The next prime is 134404431253523. The reversal of 134404431253513 is 315352134404431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109058170520464 + 25346260733049 = 10443092^2 + 5034507^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134404431253513 is a prime.

It is a super-2 number, since 2×134404431253513² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 134404431253513.

It is not a weakly prime, because it can be changed into another prime (134404431253523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67202215626756 + 67202215626757.

It is an arithmetic number, because the mean of its divisors is an integer number (67202215626757).

Almost surely, 2^{134404431253513} is an apocalyptic number.

It is an amenable number.

134404431253513 is a deficient number, since it is larger than the sum of its proper divisors (1).

134404431253513 is an equidigital number, since it uses as much as digits as its factorization.

134404431253513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 43.

Adding to 134404431253513 its reverse (315352134404431), we get a palindrome (449756565657944).

The spelling of 134404431253513 in words is "one hundred thirty-four trillion, four hundred four billion, four hundred thirty-one million, two hundred fifty-three thousand, five hundred thirteen".