10321920517 has 2 divisors, whose sum is σ = 10321920518. Its totient is φ = 10321920516.

The previous prime is 10321920493. The next prime is 10321920577. The reversal of 10321920517 is 71502912301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10066911556 + 255008961 = 100334^2 + 15969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10321920517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10321920577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5160960258 + 5160960259.

It is an arithmetic number, because the mean of its divisors is an integer number (5160960259).

Almost surely, 2^10321920517 is an apocalyptic number.

It is an amenable number.

10321920517 is a deficient number, since it is larger than the sum of its proper divisors (1).

10321920517 is an equidigital number, since it uses as much as digits as its factorization.

10321920517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 31.

The spelling of 10321920517 in words is "ten billion, three hundred twenty-one million, nine hundred twenty thousand, five hundred seventeen".