673428449523 has 8 divisors (see below), whose sum is σ = 897912576000. Its totient is φ = 448948311368.

The previous prime is 673428449483. The next prime is 673428449527. The reversal of 673428449523 is 325944824376.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 673428449523 - 2²¹ = 673426352371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (673428449527) 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 7 ways as a sum of consecutive naturals, for example, 577923 + ... + 1296476.

It is an arithmetic number, because the mean of its divisors is an integer number (112239072000).

Almost surely, 2^673428449523 is an apocalyptic number.

673428449523 is a deficient number, since it is larger than the sum of its proper divisors (224484126477).

673428449523 is a wasteful number, since it uses less digits than its factorization.

673428449523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994161.

The product of its digits is 34836480, while the sum is 57.

The spelling of 673428449523 in words is "six hundred seventy-three billion, four hundred twenty-eight million, four hundred forty-nine thousand, five hundred twenty-three".