630022689661 has 2 divisors, whose sum is σ = 630022689662. Its totient is φ = 630022689660.

The previous prime is 630022689601. The next prime is 630022689691. The reversal of 630022689661 is 166986220036.

630022689661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 629404222500 + 618467161 = 793350^2 + 24869^2 .

It is a cyclic number.

It is not a de Polignac number, because 630022689661 - 2²³ = 630014301053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630022689601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315011344830 + 315011344831.

It is an arithmetic number, because the mean of its divisors is an integer number (315011344831).

Almost surely, 2^630022689661 is an apocalyptic number.

It is an amenable number.

630022689661 is a deficient number, since it is larger than the sum of its proper divisors (1).

630022689661 is an equidigital number, since it uses as much as digits as its factorization.

630022689661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 630022689661 in words is "six hundred thirty billion, twenty-two million, six hundred eighty-nine thousand, six hundred sixty-one".