511269951641 has 2 divisors, whose sum is σ = 511269951642. Its totient is φ = 511269951640.

The previous prime is 511269951601. The next prime is 511269951671. The reversal of 511269951641 is 146159962115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 367594839616 + 143675112025 = 606296^2 + 379045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511269951641 is a prime.

It is a super-2 number, since 2×511269951641² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 511269951641.

It is not a weakly prime, because it can be changed into another prime (511269951601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255634975820 + 255634975821.

It is an arithmetic number, because the mean of its divisors is an integer number (255634975821).

Almost surely, 2^511269951641 is an apocalyptic number.

It is an amenable number.

511269951641 is a deficient number, since it is larger than the sum of its proper divisors (1).

511269951641 is an equidigital number, since it uses as much as digits as its factorization.

511269951641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 50.

The spelling of 511269951641 in words is "five hundred eleven billion, two hundred sixty-nine million, nine hundred fifty-one thousand, six hundred forty-one".