630646627217771 has 2 divisors, whose sum is σ = 630646627217772. Its totient is φ = 630646627217770.

The previous prime is 630646627217693. The next prime is 630646627217857. The reversal of 630646627217771 is 177712726646036.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 630646627217771 - 2³⁴ = 630629447348587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 630646627217698 and 630646627217707.

It is not a weakly prime, because it can be changed into another prime (630646627237771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315323313608885 + 315323313608886.

It is an arithmetic number, because the mean of its divisors is an integer number (315323313608886).

Almost surely, 2^{630646627217771} is an apocalyptic number.

630646627217771 is a deficient number, since it is larger than the sum of its proper divisors (1).

630646627217771 is an equidigital number, since it uses as much as digits as its factorization.

630646627217771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 149361408, while the sum is 65.

The spelling of 630646627217771 in words is "six hundred thirty trillion, six hundred forty-six billion, six hundred twenty-seven million, two hundred seventeen thousand, seven hundred seventy-one".