921310417673 has 2 divisors, whose sum is σ = 921310417674. Its totient is φ = 921310417672.

The previous prime is 921310417591. The next prime is 921310417693. The reversal of 921310417673 is 376714013129.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 816912284224 + 104398133449 = 903832^2 + 323107^2 .

It is a cyclic number.

It is not a de Polignac number, because 921310417673 - 2¹⁴ = 921310401289 is a prime.

It is not a weakly prime, because it can be changed into another prime (921310417693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460655208836 + 460655208837.

It is an arithmetic number, because the mean of its divisors is an integer number (460655208837).

Almost surely, 2^921310417673 is an apocalyptic number.

It is an amenable number.

921310417673 is a deficient number, since it is larger than the sum of its proper divisors (1).

921310417673 is an equidigital number, since it uses as much as digits as its factorization.

921310417673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 44.

The spelling of 921310417673 in words is "nine hundred twenty-one billion, three hundred ten million, four hundred seventeen thousand, six hundred seventy-three".