215054445550013 has 2 divisors, whose sum is σ = 215054445550014. Its totient is φ = 215054445550012.

The previous prime is 215054445549967. The next prime is 215054445550057. The reversal of 215054445550013 is 310055544450512.

It is a happy number.

It is an a-pointer prime, because the next prime (215054445550057) can be obtained adding 215054445550013 to its sum of digits (44).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117265031894404 + 97789413655609 = 10828898^2 + 9888853^2 .

It is a cyclic number.

It is not a de Polignac number, because 215054445550013 - 2⁴⁰ = 213954933922237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215054445550313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107527222775006 + 107527222775007.

It is an arithmetic number, because the mean of its divisors is an integer number (107527222775007).

Almost surely, 2^{215054445550013} is an apocalyptic number.

It is an amenable number.

215054445550013 is a deficient number, since it is larger than the sum of its proper divisors (1).

215054445550013 is an equidigital number, since it uses as much as digits as its factorization.

215054445550013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200000, while the sum is 44.

The spelling of 215054445550013 in words is "two hundred fifteen trillion, fifty-four billion, four hundred forty-five million, five hundred fifty thousand, thirteen".