634012633321 has 2 divisors, whose sum is σ = 634012633322. Its totient is φ = 634012633320.

The previous prime is 634012633301. The next prime is 634012633327. The reversal of 634012633321 is 123336210436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 365492793600 + 268519839721 = 604560^2 + 518189^2 .

It is a cyclic number.

It is not a de Polignac number, because 634012633321 - 2³³ = 625422698729 is a prime.

It is not a weakly prime, because it can be changed into another prime (634012633327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317006316660 + 317006316661.

It is an arithmetic number, because the mean of its divisors is an integer number (317006316661).

Almost surely, 2^634012633321 is an apocalyptic number.

It is an amenable number.

634012633321 is a deficient number, since it is larger than the sum of its proper divisors (1).

634012633321 is an equidigital number, since it uses as much as digits as its factorization.

634012633321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 34.

Adding to 634012633321 its reverse (123336210436), we get a palindrome (757348843757).

The spelling of 634012633321 in words is "six hundred thirty-four billion, twelve million, six hundred thirty-three thousand, three hundred twenty-one".