672443326435505 has 8 divisors (see below), whose sum is σ = 806936346087552. Its totient is φ = 537951758238448.

The previous prime is 672443326435477. The next prime is 672443326435511. The reversal of 672443326435505 is 505534623344276.

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 672443326435505 - 2⁴² = 668045279924401 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 361844249 + ... + 363697878.

It is an arithmetic number, because the mean of its divisors is an integer number (100867043260944).

Almost surely, 2^{672443326435505} is an apocalyptic number.

It is an amenable number.

672443326435505 is a deficient number, since it is larger than the sum of its proper divisors (134493019652047).

672443326435505 is a wasteful number, since it uses less digits than its factorization.

672443326435505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725727495.

The product of its (nonzero) digits is 217728000, while the sum is 59.

The spelling of 672443326435505 in words is "six hundred seventy-two trillion, four hundred forty-three billion, three hundred twenty-six million, four hundred thirty-five thousand, five hundred five".