672861956395 has 4 divisors (see below), whose sum is σ = 807434347680. Its totient is φ = 538289565112.

The previous prime is 672861956381. The next prime is 672861956539. The reversal of 672861956395 is 593659168276.

672861956395 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672861956395 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 672861956395.

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, 67286195635 + ... + 67286195644.

It is an arithmetic number, because the mean of its divisors is an integer number (201858586920).

Almost surely, 2^672861956395 is an apocalyptic number.

672861956395 is a deficient number, since it is larger than the sum of its proper divisors (134572391285).

672861956395 is a wasteful number, since it uses less digits than its factorization.

672861956395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134572391284.

The product of its digits is 146966400, while the sum is 67.

The spelling of 672861956395 in words is "six hundred seventy-two billion, eight hundred sixty-one million, nine hundred fifty-six thousand, three hundred ninety-five".