163213889564 has 48 divisors (see below), whose sum is σ = 325914382080. Its totient is φ = 70793015040.

The previous prime is 163213889551. The next prime is 163213889569. The reversal of 163213889564 is 465988312361.

It is a super-2 number, since 2×163213889564² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163213889569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231572 + ... + 616484.

It is an arithmetic number, because the mean of its divisors is an integer number (6789882960).

Almost surely, 2^163213889564 is an apocalyptic number.

It is an amenable number.

163213889564 is a deficient number, since it is larger than the sum of its proper divisors (162700492516).

163213889564 is a wasteful number, since it uses less digits than its factorization.

163213889564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385370 (or 385368 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 56.

The spelling of 163213889564 in words is "one hundred sixty-three billion, two hundred thirteen million, eight hundred eighty-nine thousand, five hundred sixty-four".