671622216550 has 24 divisors (see below), whose sum is σ = 1249291971000. Its totient is φ = 268632833280.

The previous prime is 671622216523. The next prime is 671622216571. The reversal of 671622216550 is 55612226176.

It is a junction number, because it is equal to n+sod(n) for n = 671622216497 and 671622216506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 462166 + ... + 1247734.

It is an arithmetic number, because the mean of its divisors is an integer number (52053832125).

Almost surely, 2^671622216550 is an apocalyptic number.

671622216550 is a deficient number, since it is larger than the sum of its proper divisors (577669754450).

671622216550 is a wasteful number, since it uses less digits than its factorization.

671622216550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802680 (or 802675 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 671622216550 in words is "six hundred seventy-one billion, six hundred twenty-two million, two hundred sixteen thousand, five hundred fifty".