513424421971 has 2 divisors, whose sum is σ = 513424421972. Its totient is φ = 513424421970.

The previous prime is 513424421941. The next prime is 513424422083. The reversal of 513424421971 is 179124424315.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513424421971 is a prime.

It is not a weakly prime, because it can be changed into another prime (513424421941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256712210985 + 256712210986.

It is an arithmetic number, because the mean of its divisors is an integer number (256712210986).

Almost surely, 2^513424421971 is an apocalyptic number.

513424421971 is a deficient number, since it is larger than the sum of its proper divisors (1).

513424421971 is an equidigital number, since it uses as much as digits as its factorization.

513424421971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The spelling of 513424421971 in words is "five hundred thirteen billion, four hundred twenty-four million, four hundred twenty-one thousand, nine hundred seventy-one".