671622216522 has 16 divisors (see below), whose sum is σ = 1359428101920. Its totient is φ = 221176794032.

The previous prime is 671622216493. The next prime is 671622216523. The reversal of 671622216522 is 225612226176.

It is not an unprimeable number, because it can be changed into a prime (671622216523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674318997 + ... + 674319992.

It is an arithmetic number, because the mean of its divisors is an integer number (84964256370).

Almost surely, 2^671622216522 is an apocalyptic number.

671622216522 is an abundant number, since it is smaller than the sum of its proper divisors (687805885398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671622216522 is a wasteful number, since it uses less digits than its factorization.

671622216522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348639077.

The product of its digits is 241920, while the sum is 42.

The spelling of 671622216522 in words is "six hundred seventy-one billion, six hundred twenty-two million, two hundred sixteen thousand, five hundred twenty-two".