511212339863 has 2 divisors, whose sum is σ = 511212339864. Its totient is φ = 511212339862.

The previous prime is 511212339857. The next prime is 511212339877. The reversal of 511212339863 is 368933212115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 511212339863 - 2²⁰ = 511211291287 is a prime.

It is a super-2 number, since 2×511212339863² (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 (511215339863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255606169931 + 255606169932.

It is an arithmetic number, because the mean of its divisors is an integer number (255606169932).

Almost surely, 2^511212339863 is an apocalyptic number.

511212339863 is a deficient number, since it is larger than the sum of its proper divisors (1).

511212339863 is an equidigital number, since it uses as much as digits as its factorization.

511212339863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 44.

The spelling of 511212339863 in words is "five hundred eleven billion, two hundred twelve million, three hundred thirty-nine thousand, eight hundred sixty-three".