671622216555 has 16 divisors (see below), whose sum is σ = 1088198023680. Its totient is φ = 353664356448.

The previous prime is 671622216523. The next prime is 671622216571. The reversal of 671622216555 is 555612226176.

It is not a de Polignac number, because 671622216555 - 2⁵ = 671622216523 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283383717 + ... + 283386086.

It is an arithmetic number, because the mean of its divisors is an integer number (68012376480).

Almost surely, 2^671622216555 is an apocalyptic number.

671622216555 is a deficient number, since it is larger than the sum of its proper divisors (416575807125).

671622216555 is a wasteful number, since it uses less digits than its factorization.

671622216555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566769890.

The product of its digits is 1512000, while the sum is 48.

The spelling of 671622216555 in words is "six hundred seventy-one billion, six hundred twenty-two million, two hundred sixteen thousand, five hundred fifty-five".