673636440756 has 48 divisors (see below), whose sum is σ = 1575382596480. Its totient is φ = 224036883840.

The previous prime is 673636440739. The next prime is 673636440809. The reversal of 673636440756 is 657044636376.

It is a junction number, because it is equal to n+sod(n) for n = 673636440696 and 673636440705.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9491530 + ... + 9562238.

It is an arithmetic number, because the mean of its divisors is an integer number (32820470760).

Almost surely, 2^673636440756 is an apocalyptic number.

It is an amenable number.

673636440756 is an abundant number, since it is smaller than the sum of its proper divisors (901746155724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673636440756 is a wasteful number, since it uses less digits than its factorization.

673636440756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72504 (or 72502 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 57.

The spelling of 673636440756 in words is "six hundred seventy-three billion, six hundred thirty-six million, four hundred forty thousand, seven hundred fifty-six".