215064530377 has 2 divisors, whose sum is σ = 215064530378. Its totient is φ = 215064530376.

The previous prime is 215064530341. The next prime is 215064530383. The reversal of 215064530377 is 773035460512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119787978816 + 95276551561 = 346104^2 + 308669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215064530377 is a prime.

It is not a weakly prime, because it can be changed into another prime (215064530777) 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, 107532265188 + 107532265189.

It is an arithmetic number, because the mean of its divisors is an integer number (107532265189).

Almost surely, 2^215064530377 is an apocalyptic number.

It is an amenable number.

215064530377 is a deficient number, since it is larger than the sum of its proper divisors (1).

215064530377 is an equidigital number, since it uses as much as digits as its factorization.

215064530377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 43.

Adding to 215064530377 its reverse (773035460512), we get a palindrome (988099990889).

The spelling of 215064530377 in words is "two hundred fifteen billion, sixty-four million, five hundred thirty thousand, three hundred seventy-seven".