511336562081 has 2 divisors, whose sum is σ = 511336562082. Its totient is φ = 511336562080.

The previous prime is 511336562063. The next prime is 511336562131. The reversal of 511336562081 is 180265633115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 268961518225 + 242375043856 = 518615^2 + 492316^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511336562081 is a prime.

It is a super-2 number, since 2×511336562081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (511336502081) 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, 255668281040 + 255668281041.

It is an arithmetic number, because the mean of its divisors is an integer number (255668281041).

Almost surely, 2^511336562081 is an apocalyptic number.

It is an amenable number.

511336562081 is a deficient number, since it is larger than the sum of its proper divisors (1).

511336562081 is an equidigital number, since it uses as much as digits as its factorization.

511336562081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 511336562081 in words is "five hundred eleven billion, three hundred thirty-six million, five hundred sixty-two thousand, eighty-one".