511887306473 has 2 divisors, whose sum is σ = 511887306474. Its totient is φ = 511887306472.

The previous prime is 511887306461. The next prime is 511887306509. The reversal of 511887306473 is 374603788115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 453288453289 + 58598853184 = 673267^2 + 242072^2 .

It is a cyclic number.

It is not a de Polignac number, because 511887306473 - 2⁴ = 511887306457 is a prime.

It is a super-2 number, since 2×511887306473² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (511887306443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255943653236 + 255943653237.

It is an arithmetic number, because the mean of its divisors is an integer number (255943653237).

Almost surely, 2^511887306473 is an apocalyptic number.

It is an amenable number.

511887306473 is a deficient number, since it is larger than the sum of its proper divisors (1).

511887306473 is an equidigital number, since it uses as much as digits as its factorization.

511887306473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 511887306473 in words is "five hundred eleven billion, eight hundred eighty-seven million, three hundred six thousand, four hundred seventy-three".