634773255041449 has 2 divisors, whose sum is σ = 634773255041450. Its totient is φ = 634773255041448.

The previous prime is 634773255041447. The next prime is 634773255041477. The reversal of 634773255041449 is 944140552377436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 581342008771225 + 53431246270224 = 24111035^2 + 7309668^2 .

It is a cyclic number.

It is not a de Polignac number, because 634773255041449 - 2¹ = 634773255041447 is a prime.

Together with 634773255041447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (634773255041447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317386627520724 + 317386627520725.

It is an arithmetic number, because the mean of its divisors is an integer number (317386627520725).

Almost surely, 2^{634773255041449} is an apocalyptic number.

It is an amenable number.

634773255041449 is a deficient number, since it is larger than the sum of its proper divisors (1).

634773255041449 is an equidigital number, since it uses as much as digits as its factorization.

634773255041449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 304819200, while the sum is 64.

The spelling of 634773255041449 in words is "six hundred thirty-four trillion, seven hundred seventy-three billion, two hundred fifty-five million, forty-one thousand, four hundred forty-nine".