6550512568129 has 2 divisors, whose sum is σ = 6550512568130. Its totient is φ = 6550512568128.

The previous prime is 6550512568043. The next prime is 6550512568139. The reversal of 6550512568129 is 9218652150556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4436701897104 + 2113810671025 = 2106348^2 + 1453895^2 .

It is a cyclic number.

It is not a de Polignac number, because 6550512568129 - 2⁹ = 6550512567617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6550512568129.

It is not a weakly prime, because it can be changed into another prime (6550512568139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275256284064 + 3275256284065.

It is an arithmetic number, because the mean of its divisors is an integer number (3275256284065).

Almost surely, 2^{6550512568129} is an apocalyptic number.

It is an amenable number.

6550512568129 is a deficient number, since it is larger than the sum of its proper divisors (1).

6550512568129 is an equidigital number, since it uses as much as digits as its factorization.

6550512568129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480000, while the sum is 55.

The spelling of 6550512568129 in words is "six trillion, five hundred fifty billion, five hundred twelve million, five hundred sixty-eight thousand, one hundred twenty-nine".