2215768259641 has 2 divisors, whose sum is σ = 2215768259642. Its totient is φ = 2215768259640.

The previous prime is 2215768259527. The next prime is 2215768259687. The reversal of 2215768259641 is 1469528675122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1718186153616 + 497582106025 = 1310796^2 + 705395^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215768259641 - 2²⁵ = 2215734705209 is a prime.

It is not a weakly prime, because it can be changed into another prime (2215768229641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107884129820 + 1107884129821.

It is an arithmetic number, because the mean of its divisors is an integer number (1107884129821).

Almost surely, 2^{2215768259641} is an apocalyptic number.

It is an amenable number.

2215768259641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215768259641 is an equidigital number, since it uses as much as digits as its factorization.

2215768259641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14515200, while the sum is 58.

The spelling of 2215768259641 in words is "two trillion, two hundred fifteen billion, seven hundred sixty-eight million, two hundred fifty-nine thousand, six hundred forty-one".