2215663223993 has 2 divisors, whose sum is σ = 2215663223994. Its totient is φ = 2215663223992.

The previous prime is 2215663223989. The next prime is 2215663224007. The reversal of 2215663223993 is 3993223665122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1212436625449 + 1003226598544 = 1101107^2 + 1001612^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215663223993 - 2² = 2215663223989 is a prime.

It is not a weakly prime, because it can be changed into another prime (2215663223953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107831611996 + 1107831611997.

It is an arithmetic number, because the mean of its divisors is an integer number (1107831611997).

Almost surely, 2^{2215663223993} is an apocalyptic number.

It is an amenable number.

2215663223993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215663223993 is an equidigital number, since it uses as much as digits as its factorization.

2215663223993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6298560, while the sum is 53.

The spelling of 2215663223993 in words is "two trillion, two hundred fifteen billion, six hundred sixty-three million, two hundred twenty-three thousand, nine hundred ninety-three".