246623265989 has 2 divisors, whose sum is σ = 246623265990. Its totient is φ = 246623265988.

The previous prime is 246623265943. The next prime is 246623265991. The reversal of 246623265989 is 989562326642.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193362472900 + 53260793089 = 439730^2 + 230783^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-246623265989 is a prime.

Together with 246623265991, 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 (246623265389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123311632994 + 123311632995.

It is an arithmetic number, because the mean of its divisors is an integer number (123311632995).

Almost surely, 2^246623265989 is an apocalyptic number.

It is an amenable number.

246623265989 is a deficient number, since it is larger than the sum of its proper divisors (1).

246623265989 is an equidigital number, since it uses as much as digits as its factorization.

246623265989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67184640, while the sum is 62.

The spelling of 246623265989 in words is "two hundred forty-six billion, six hundred twenty-three million, two hundred sixty-five thousand, nine hundred eighty-nine".