215656301053 has 2 divisors, whose sum is σ = 215656301054. Its totient is φ = 215656301052.

The previous prime is 215656301051. The next prime is 215656301057. The reversal of 215656301053 is 350103656512.

215656301053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205655901049 + 10000400004 = 453493^2 + 100002^2 .

It is a cyclic number.

It is not a de Polignac number, because 215656301053 - 2¹ = 215656301051 is a prime.

Together with 215656301051, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215656301051) 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, 107828150526 + 107828150527.

It is an arithmetic number, because the mean of its divisors is an integer number (107828150527).

Almost surely, 2^215656301053 is an apocalyptic number.

It is an amenable number.

215656301053 is a deficient number, since it is larger than the sum of its proper divisors (1).

215656301053 is an equidigital number, since it uses as much as digits as its factorization.

215656301053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81000, while the sum is 37.

Adding to 215656301053 its reverse (350103656512), we get a palindrome (565759957565).

The spelling of 215656301053 in words is "two hundred fifteen billion, six hundred fifty-six million, three hundred one thousand, fifty-three".