634775064419 has 2 divisors, whose sum is σ = 634775064420. Its totient is φ = 634775064418.

The previous prime is 634775064397. The next prime is 634775064437. The reversal of 634775064419 is 914460577436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 634775064419 - 2¹² = 634775060323 is a prime.

It is a super-3 number, since 3×634775064419³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (634775064439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317387532209 + 317387532210.

It is an arithmetic number, because the mean of its divisors is an integer number (317387532210).

Almost surely, 2^634775064419 is an apocalyptic number.

634775064419 is a deficient number, since it is larger than the sum of its proper divisors (1).

634775064419 is an equidigital number, since it uses as much as digits as its factorization.

634775064419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 56.

The spelling of 634775064419 in words is "six hundred thirty-four billion, seven hundred seventy-five million, sixty-four thousand, four hundred nineteen".