673734073399 has 4 divisors (see below), whose sum is σ = 674260840960. Its totient is φ = 673207305840.

The previous prime is 673734073373. The next prime is 673734073483. The reversal of 673734073399 is 993370437376.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 673734073399 - 2¹⁷ = 673733942327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673734073099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263381862 + ... + 263384419.

It is an arithmetic number, because the mean of its divisors is an integer number (168565210240).

Almost surely, 2^673734073399 is an apocalyptic number.

673734073399 is a deficient number, since it is larger than the sum of its proper divisors (526767561).

673734073399 is a wasteful number, since it uses less digits than its factorization.

673734073399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526767560.

The product of its (nonzero) digits is 54010152, while the sum is 61.

The spelling of 673734073399 in words is "six hundred seventy-three billion, seven hundred thirty-four million, seventy-three thousand, three hundred ninety-nine".