673757220123 has 24 divisors (see below), whose sum is σ = 1072440441072. Its totient is φ = 404977503168.

The previous prime is 673757220109. The next prime is 673757220133. The reversal of 673757220123 is 321022757376.

It is a happy number.

673757220123 is a `hidden beast` number, since 6 + 7 + 37 + 572 + 20 + 1 + 23 = 666.

It is not a de Polignac number, because 673757220123 - 2⁵ = 673757220091 is a prime.

It is a super-2 number, since 2×673757220123² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (673757220133) 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 23 ways as a sum of consecutive naturals, for example, 66955536 + ... + 66965597.

It is an arithmetic number, because the mean of its divisors is an integer number (44685018378).

Almost surely, 2^673757220123 is an apocalyptic number.

673757220123 is a deficient number, since it is larger than the sum of its proper divisors (398683220949).

673757220123 is a wasteful number, since it uses less digits than its factorization.

673757220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133921195 (or 133921192 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 45.

Adding to 673757220123 its reverse (321022757376), we get a palindrome (994779977499).

The spelling of 673757220123 in words is "six hundred seventy-three billion, seven hundred fifty-seven million, two hundred twenty thousand, one hundred twenty-three".