634260445060421 has 2 divisors, whose sum is σ = 634260445060422. Its totient is φ = 634260445060420.

The previous prime is 634260445060399. The next prime is 634260445060423. The reversal of 634260445060421 is 124060544062436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 478607723181025 + 155652721879396 = 21877105^2 + 12476086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634260445060421 is a prime.

Together with 634260445060423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634260445060423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317130222530210 + 317130222530211.

It is an arithmetic number, because the mean of its divisors is an integer number (317130222530211).

Almost surely, 2^{634260445060421} is an apocalyptic number.

It is an amenable number.

634260445060421 is a deficient number, since it is larger than the sum of its proper divisors (1).

634260445060421 is an equidigital number, since it uses as much as digits as its factorization.

634260445060421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3317760, while the sum is 47.

The spelling of 634260445060421 in words is "six hundred thirty-four trillion, two hundred sixty billion, four hundred forty-five million, sixty thousand, four hundred twenty-one".