164222047856 has 20 divisors (see below), whose sum is σ = 325579759032. Its totient is φ = 80201464896.

The previous prime is 164222047849. The next prime is 164222047907. The reversal of 164222047856 is 658740222461.

It is a self number, because there is not a number n which added to its sum of digits gives 164222047856.

It is a congruent number.

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, 119346731 + ... + 119348106.

Almost surely, 2^164222047856 is an apocalyptic number.

164222047856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

164222047856 is a deficient number, since it is larger than the sum of its proper divisors (161357711176).

164222047856 is a wasteful number, since it uses less digits than its factorization.

164222047856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238694888 (or 238694882 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 47.

The spelling of 164222047856 in words is "one hundred sixty-four billion, two hundred twenty-two million, forty-seven thousand, eight hundred fifty-six".