673726463973 has 32 divisors (see below), whose sum is σ = 1056925134720. Its totient is φ = 422690607360.

The previous prime is 673726463947. The next prime is 673726463989. The reversal of 673726463973 is 379364627376.

It is a happy number.

673726463973 is a `hidden beast` number, since 67 + 3 + 7 + 26 + 463 + 97 + 3 = 666.

It is not a de Polignac number, because 673726463973 - 2²⁴ = 673709686757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 673726463973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673726463273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5270886 + ... + 5397192.

It is an arithmetic number, because the mean of its divisors is an integer number (33028910460).

Almost surely, 2^673726463973 is an apocalyptic number.

It is an amenable number.

673726463973 is a deficient number, since it is larger than the sum of its proper divisors (383198670747).

673726463973 is a wasteful number, since it uses less digits than its factorization.

673726463973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137954 (or 137948 counting only the distinct ones).

The product of its digits is 144027072, while the sum is 63.

The spelling of 673726463973 in words is "six hundred seventy-three billion, seven hundred twenty-six million, four hundred sixty-three thousand, nine hundred seventy-three".