511211291287 has 2 divisors, whose sum is σ = 511211291288. Its totient is φ = 511211291286.

The previous prime is 511211291281. The next prime is 511211291347. The reversal of 511211291287 is 782192112115.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 511211291287 - 2⁷ = 511211291159 is a prime.

It is a super-2 number, since 2×511211291287² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (511211291281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255605645643 + 255605645644.

It is an arithmetic number, because the mean of its divisors is an integer number (255605645644).

Almost surely, 2^511211291287 is an apocalyptic number.

511211291287 is a deficient number, since it is larger than the sum of its proper divisors (1).

511211291287 is an equidigital number, since it uses as much as digits as its factorization.

511211291287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 40.

The spelling of 511211291287 in words is "five hundred eleven billion, two hundred eleven million, two hundred ninety-one thousand, two hundred eighty-seven".