134744683649 has 2 divisors, whose sum is σ = 134744683650. Its totient is φ = 134744683648.

The previous prime is 134744683589. The next prime is 134744683657. The reversal of 134744683649 is 946386447431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97114503424 + 37630180225 = 311632^2 + 193985^2 .

It is an emirp because it is prime and its reverse (946386447431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134744683649 is a prime.

It is a super-2 number, since 2×134744683649² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (134744683699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67372341824 + 67372341825.

It is an arithmetic number, because the mean of its divisors is an integer number (67372341825).

Almost surely, 2^134744683649 is an apocalyptic number.

It is an amenable number.

134744683649 is a deficient number, since it is larger than the sum of its proper divisors (1).

134744683649 is an equidigital number, since it uses as much as digits as its factorization.

134744683649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41803776, while the sum is 59.

The spelling of 134744683649 in words is "one hundred thirty-four billion, seven hundred forty-four million, six hundred eighty-three thousand, six hundred forty-nine".