215555365111043 has 2 divisors, whose sum is σ = 215555365111044. Its totient is φ = 215555365111042.

The previous prime is 215555365110997. The next prime is 215555365111129. The reversal of 215555365111043 is 340111563555512.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215555365111043 - 2¹² = 215555365106947 is a prime.

It is not a weakly prime, because it can be changed into another prime (215555365113043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107777682555521 + 107777682555522.

It is an arithmetic number, because the mean of its divisors is an integer number (107777682555522).

Almost surely, 2^{215555365111043} is an apocalyptic number.

215555365111043 is a deficient number, since it is larger than the sum of its proper divisors (1).

215555365111043 is an equidigital number, since it uses as much as digits as its factorization.

215555365111043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350000, while the sum is 47.

The spelling of 215555365111043 in words is "two hundred fifteen trillion, five hundred fifty-five billion, three hundred sixty-five million, one hundred eleven thousand, forty-three".