671369220889 has 2 divisors, whose sum is σ = 671369220890. Its totient is φ = 671369220888.

The previous prime is 671369220859. The next prime is 671369220919. The reversal of 671369220889 is 988022963176.

It is a balanced prime because it is at equal distance from previous prime (671369220859) and next prime (671369220919).

It can be written as a sum of positive squares in only one way, i.e., 619809798400 + 51559422489 = 787280^2 + 227067^2 .

It is a cyclic number.

It is not a de Polignac number, because 671369220889 - 2⁵ = 671369220857 is a prime.

It is not a weakly prime, because it can be changed into another prime (671369220859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335684610444 + 335684610445.

It is an arithmetic number, because the mean of its divisors is an integer number (335684610445).

Almost surely, 2^671369220889 is an apocalyptic number.

It is an amenable number.

671369220889 is a deficient number, since it is larger than the sum of its proper divisors (1).

671369220889 is an equidigital number, since it uses as much as digits as its factorization.

671369220889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15676416, while the sum is 61.

The spelling of 671369220889 in words is "six hundred seventy-one billion, three hundred sixty-nine million, two hundred twenty thousand, eight hundred eighty-nine".