673558242855403 has 2 divisors, whose sum is σ = 673558242855404. Its totient is φ = 673558242855402.

The previous prime is 673558242855361. The next prime is 673558242855437. The reversal of 673558242855403 is 304558242855376.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 673558242855403 - 2²⁵ = 673558209300971 is a prime.

It is not a weakly prime, because it can be changed into another prime (673558242850403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336779121427701 + 336779121427702.

It is an arithmetic number, because the mean of its divisors is an integer number (336779121427702).

Almost surely, 2^{673558242855403} is an apocalyptic number.

673558242855403 is a deficient number, since it is larger than the sum of its proper divisors (1).

673558242855403 is an equidigital number, since it uses as much as digits as its factorization.

673558242855403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680000, while the sum is 67.

The spelling of 673558242855403 in words is "six hundred seventy-three trillion, five hundred fifty-eight billion, two hundred forty-two million, eight hundred fifty-five thousand, four hundred three".