513316029991 has 2 divisors, whose sum is σ = 513316029992. Its totient is φ = 513316029990.

The previous prime is 513316029959. The next prime is 513316030037. The reversal of 513316029991 is 199920613315.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513316029991 - 2⁵ = 513316029959 is a prime.

It is a super-2 number, since 2×513316029991² (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 (513316029491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256658014995 + 256658014996.

It is an arithmetic number, because the mean of its divisors is an integer number (256658014996).

Almost surely, 2^513316029991 is an apocalyptic number.

513316029991 is a deficient number, since it is larger than the sum of its proper divisors (1).

513316029991 is an equidigital number, since it uses as much as digits as its factorization.

513316029991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 393660, while the sum is 49.

The spelling of 513316029991 in words is "five hundred thirteen billion, three hundred sixteen million, twenty-nine thousand, nine hundred ninety-one".