634044440417 has 2 divisors, whose sum is σ = 634044440418. Its totient is φ = 634044440416.

The previous prime is 634044440389. The next prime is 634044440441. The reversal of 634044440417 is 714044440436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 591182605456 + 42861834961 = 768884^2 + 207031^2 .

It is a cyclic number.

It is not a de Polignac number, because 634044440417 - 2²² = 634040246113 is a prime.

It is not a weakly prime, because it can be changed into another prime (634044440717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317022220208 + 317022220209.

It is an arithmetic number, because the mean of its divisors is an integer number (317022220209).

Almost surely, 2^634044440417 is an apocalyptic number.

It is an amenable number.

634044440417 is a deficient number, since it is larger than the sum of its proper divisors (1).

634044440417 is an equidigital number, since it uses as much as digits as its factorization.

634044440417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 516096, while the sum is 41.

The spelling of 634044440417 in words is "six hundred thirty-four billion, forty-four million, four hundred forty thousand, four hundred seventeen".