671622216855 has 32 divisors (see below), whose sum is σ = 1082473056768. Its totient is φ = 355577040000.

The previous prime is 671622216817. The next prime is 671622216857. The reversal of 671622216855 is 558612226176.

It is a de Polignac number, because none of the positive numbers 2^k-671622216855 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 671622216798 and 671622216807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671622216857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2339430 + ... + 2610780.

It is an arithmetic number, because the mean of its divisors is an integer number (33827283024).

Almost surely, 2^671622216855 is an apocalyptic number.

671622216855 is a deficient number, since it is larger than the sum of its proper divisors (410850839913).

671622216855 is a wasteful number, since it uses less digits than its factorization.

671622216855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272567.

The product of its digits is 2419200, while the sum is 51.

The spelling of 671622216855 in words is "six hundred seventy-one billion, six hundred twenty-two million, two hundred sixteen thousand, eight hundred fifty-five".