513163601643 has 64 divisors (see below), whose sum is σ = 898018762752. Its totient is φ = 252731297280.

The previous prime is 513163601633. The next prime is 513163601653. The reversal of 513163601643 is 346106361315.

It is an interprime number because it is at equal distance from previous prime (513163601633) and next prime (513163601653).

It is not a de Polignac number, because 513163601643 - 2²⁸ = 512895166187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (513163601633) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 172996 + ... + 1027742.

It is an arithmetic number, because the mean of its divisors is an integer number (14031543168).

Almost surely, 2^513163601643 is an apocalyptic number.

513163601643 is a deficient number, since it is larger than the sum of its proper divisors (384855161109).

513163601643 is a wasteful number, since it uses less digits than its factorization.

513163601643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854904.

The product of its (nonzero) digits is 116640, while the sum is 39.

Adding to 513163601643 its reverse (346106361315), we get a palindrome (859269962958).

The spelling of 513163601643 in words is "five hundred thirteen billion, one hundred sixty-three million, six hundred one thousand, six hundred forty-three".