510986446991 has 2 divisors, whose sum is σ = 510986446992. Its totient is φ = 510986446990.

The previous prime is 510986446979. The next prime is 510986447009. The reversal of 510986446991 is 199644689015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 510986446991 - 2¹⁴ = 510986430607 is a prime.

It is a super-2 number, since 2×510986446991² (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 (510986446951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255493223495 + 255493223496.

It is an arithmetic number, because the mean of its divisors is an integer number (255493223496).

Almost surely, 2^510986446991 is an apocalyptic number.

510986446991 is a deficient number, since it is larger than the sum of its proper divisors (1).

510986446991 is an equidigital number, since it uses as much as digits as its factorization.

510986446991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16796160, while the sum is 62.

The spelling of 510986446991 in words is "five hundred ten billion, nine hundred eighty-six million, four hundred forty-six thousand, nine hundred ninety-one".