134564220449 has 2 divisors, whose sum is σ = 134564220450. Its totient is φ = 134564220448.

The previous prime is 134564220431. The next prime is 134564220499. The reversal of 134564220449 is 944022465431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125865300625 + 8698919824 = 354775^2 + 93268^2 .

It is an emirp because it is prime and its reverse (944022465431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134564220449 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (134564220499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67282110224 + 67282110225.

It is an arithmetic number, because the mean of its divisors is an integer number (67282110225).

Almost surely, 2^134564220449 is an apocalyptic number.

It is an amenable number.

134564220449 is a deficient number, since it is larger than the sum of its proper divisors (1).

134564220449 is an equidigital number, since it uses as much as digits as its factorization.

134564220449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 134564220449 in words is "one hundred thirty-four billion, five hundred sixty-four million, two hundred twenty thousand, four hundred forty-nine".