873317855513 has 2 divisors, whose sum is σ = 873317855514. Its totient is φ = 873317855512.

The previous prime is 873317855497. The next prime is 873317855561. The reversal of 873317855513 is 315558713378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 623834588224 + 249483267289 = 789832^2 + 499483^2 .

It is a cyclic number.

It is not a de Polignac number, because 873317855513 - 2⁴ = 873317855497 is a prime.

It is not a weakly prime, because it can be changed into another prime (873317855573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436658927756 + 436658927757.

It is an arithmetic number, because the mean of its divisors is an integer number (436658927757).

Almost surely, 2^873317855513 is an apocalyptic number.

It is an amenable number.

873317855513 is a deficient number, since it is larger than the sum of its proper divisors (1).

873317855513 is an equidigital number, since it uses as much as digits as its factorization.

873317855513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584000, while the sum is 56.

The spelling of 873317855513 in words is "eight hundred seventy-three billion, three hundred seventeen million, eight hundred fifty-five thousand, five hundred thirteen".