511706744761 has 2 divisors, whose sum is σ = 511706744762. Its totient is φ = 511706744760.

The previous prime is 511706744711. The next prime is 511706744771. The reversal of 511706744761 is 167447607115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 455819420736 + 55887324025 = 675144^2 + 236405^2 .

It is a cyclic number.

It is not a de Polignac number, because 511706744761 - 2¹⁷ = 511706613689 is a prime.

It is not a weakly prime, because it can be changed into another prime (511706744711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255853372380 + 255853372381.

It is an arithmetic number, because the mean of its divisors is an integer number (255853372381).

Almost surely, 2^511706744761 is an apocalyptic number.

It is an amenable number.

511706744761 is a deficient number, since it is larger than the sum of its proper divisors (1).

511706744761 is an equidigital number, since it uses as much as digits as its factorization.

511706744761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 987840, while the sum is 49.

The spelling of 511706744761 in words is "five hundred eleven billion, seven hundred six million, seven hundred forty-four thousand, seven hundred sixty-one".