873317855497 has 2 divisors, whose sum is σ = 873317855498. Its totient is φ = 873317855496.

The previous prime is 873317855477. The next prime is 873317855513. The reversal of 873317855497 is 794558713378.

873317855497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 839680828281 + 33637027216 = 916341^2 + 183404^2 .

It is a cyclic number.

It is not a de Polignac number, because 873317855497 - 2¹¹ = 873317853449 is a prime.

It is not a weakly prime, because it can be changed into another prime (873317855437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436658927748 + 436658927749.

It is an arithmetic number, because the mean of its divisors is an integer number (436658927749).

Almost surely, 2^873317855497 is an apocalyptic number.

It is an amenable number.

873317855497 is a deficient number, since it is larger than the sum of its proper divisors (1).

873317855497 is an equidigital number, since it uses as much as digits as its factorization.

873317855497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 177811200, while the sum is 67.

The spelling of 873317855497 in words is "eight hundred seventy-three billion, three hundred seventeen million, eight hundred fifty-five thousand, four hundred ninety-seven".