215605224053 has 2 divisors, whose sum is σ = 215605224054. Its totient is φ = 215605224052.

The previous prime is 215605224019. The next prime is 215605224061. The reversal of 215605224053 is 350422506512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188891936689 + 26713287364 = 434617^2 + 163442^2 .

It is a cyclic number.

It is not a de Polignac number, because 215605224053 - 2⁶ = 215605223989 is a prime.

It is a super-2 number, since 2×215605224053² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215605224553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107802612026 + 107802612027.

It is an arithmetic number, because the mean of its divisors is an integer number (107802612027).

Almost surely, 2^215605224053 is an apocalyptic number.

It is an amenable number.

215605224053 is a deficient number, since it is larger than the sum of its proper divisors (1).

215605224053 is an equidigital number, since it uses as much as digits as its factorization.

215605224053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 215605224053 in words is "two hundred fifteen billion, six hundred five million, two hundred twenty-four thousand, fifty-three".