513216423641 has 2 divisors, whose sum is σ = 513216423642. Its totient is φ = 513216423640.

The previous prime is 513216423617. The next prime is 513216423701. The reversal of 513216423641 is 146324612315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 406028937616 + 107187486025 = 637204^2 + 327395^2 .

It is a cyclic number.

It is not a de Polignac number, because 513216423641 - 2²² = 513212229337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 513216423595 and 513216423604.

It is not a weakly prime, because it can be changed into another prime (513216423241) 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, 256608211820 + 256608211821.

It is an arithmetic number, because the mean of its divisors is an integer number (256608211821).

Almost surely, 2^513216423641 is an apocalyptic number.

It is an amenable number.

513216423641 is a deficient number, since it is larger than the sum of its proper divisors (1).

513216423641 is an equidigital number, since it uses as much as digits as its factorization.

513216423641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 38.

The spelling of 513216423641 in words is "five hundred thirteen billion, two hundred sixteen million, four hundred twenty-three thousand, six hundred forty-one".