163229491656 has 256 divisors, whose sum is σ = 569099520000. Its totient is φ = 42112085760.

The previous prime is 163229491643. The next prime is 163229491657. The reversal of 163229491656 is 656194922361.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (163229491657) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2445235 + ... + 2511101.

It is an arithmetic number, because the mean of its divisors is an integer number (2223045000).

Almost surely, 2^163229491656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163229491656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284549760000).

163229491656 is an abundant number, since it is smaller than the sum of its proper divisors (405870028344).

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

163229491656 is a wasteful number, since it uses less digits than its factorization.

163229491656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66049 (or 66039 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The spelling of 163229491656 in words is "one hundred sixty-three billion, two hundred twenty-nine million, four hundred ninety-one thousand, six hundred fifty-six".