672731205550 has 48 divisors (see below), whose sum is σ = 1310764578912. Its totient is φ = 256391168000.

The previous prime is 672731205539. The next prime is 672731205563. The reversal of 672731205550 is 55502137276.

It is a junction number, because it is equal to n+sod(n) for n = 672731205497 and 672731205506.

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 23 ways as a sum of consecutive naturals, for example, 842551 + ... + 1433650.

It is an arithmetic number, because the mean of its divisors is an integer number (27307595394).

Almost surely, 2^672731205550 is an apocalyptic number.

672731205550 is a deficient number, since it is larger than the sum of its proper divisors (638033373362).

672731205550 is a wasteful number, since it uses less digits than its factorization.

672731205550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276493 (or 2276488 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 43.

The spelling of 672731205550 in words is "six hundred seventy-two billion, seven hundred thirty-one million, two hundred five thousand, five hundred fifty".