163670945522 has 18 divisors (see below), whose sum is σ = 285596087247. Its totient is φ = 70142974524.

The previous prime is 163670945519. The next prime is 163670945533. The reversal of 163670945522 is 225549076361.

It can be written as a sum of positive squares in only one way, i.e., 81835472761 + 81835472761 = 286069^2 + 286069^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=286069.

It is a super-3 number, since 3×163670945522³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3984533 + ... + 4025399.

Almost surely, 2^163670945522 is an apocalyptic number.

163670945522 is a deficient number, since it is larger than the sum of its proper divisors (121925141725).

163670945522 is an frugal number, since it uses more digits than its factorization.

163670945522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81750 (or 40876 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 50.

Multiplying 163670945522 by its sum of digits (50), we get a square (8183547276100 = 2860690²).

The spelling of 163670945522 in words is "one hundred sixty-three billion, six hundred seventy million, nine hundred forty-five thousand, five hundred twenty-two".