672856369555 has 4 divisors (see below), whose sum is σ = 807427643472. Its totient is φ = 538285095640.

The previous prime is 672856369541. The next prime is 672856369567. The reversal of 672856369555 is 555963658276.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 672856369555 - 2³³ = 664266434963 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67285636951 + ... + 67285636960.

It is an arithmetic number, because the mean of its divisors is an integer number (201856910868).

Almost surely, 2^672856369555 is an apocalyptic number.

672856369555 is a deficient number, since it is larger than the sum of its proper divisors (134571273917).

672856369555 is a wasteful number, since it uses less digits than its factorization.

672856369555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134571273916.

The product of its digits is 408240000, while the sum is 67.

The spelling of 672856369555 in words is "six hundred seventy-two billion, eight hundred fifty-six million, three hundred sixty-nine thousand, five hundred fifty-five".