673023344399 has 32 divisors (see below), whose sum is σ = 801715968000. Its totient is φ = 552778297344.

The previous prime is 673023344363. The next prime is 673023344407. The reversal of 673023344399 is 993443320376.

It is a happy number.

It is a Cunningham number, because it is equal to 820380²-1.

It is a de Polignac number, because none of the positive numbers 2^k-673023344399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 673023344399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673023344309) 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, 23776847 + ... + 23805135.

It is an arithmetic number, because the mean of its divisors is an integer number (25053624000).

Almost surely, 2^673023344399 is an apocalyptic number.

673023344399 is a deficient number, since it is larger than the sum of its proper divisors (128692623601).

673023344399 is a wasteful number, since it uses less digits than its factorization.

673023344399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29207.

The product of its (nonzero) digits is 8817984, while the sum is 53.

The spelling of 673023344399 in words is "six hundred seventy-three billion, twenty-three million, three hundred forty-four thousand, three hundred ninety-nine".