173400673409 has 2 divisors, whose sum is σ = 173400673410. Its totient is φ = 173400673408.

The previous prime is 173400673333. The next prime is 173400673423. The reversal of 173400673409 is 904376004371.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133592443009 + 39808230400 = 365503^2 + 199520^2 .

It is a cyclic number.

It is not a de Polignac number, because 173400673409 - 2¹⁶ = 173400607873 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 173400673409.

It is not a weakly prime, because it can be changed into another prime (173400673909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86700336704 + 86700336705.

It is an arithmetic number, because the mean of its divisors is an integer number (86700336705).

Almost surely, 2^173400673409 is an apocalyptic number.

It is an amenable number.

173400673409 is a deficient number, since it is larger than the sum of its proper divisors (1).

173400673409 is an equidigital number, since it uses as much as digits as its factorization.

173400673409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 44.

The spelling of 173400673409 in words is "one hundred seventy-three billion, four hundred million, six hundred seventy-three thousand, four hundred nine".