163426620672 has 216 divisors, whose sum is σ = 566857287360. Its totient is φ = 44235694080.

The previous prime is 163426620629. The next prime is 163426620689. The reversal of 163426620672 is 276026624361.

163426620672 is a `hidden beast` number, since 1 + 634 + 2 + 6 + 6 + 2 + 0 + 6 + 7 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39772 + ... + 573092.

Almost surely, 2^163426620672 is an apocalyptic number.

163426620672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163426620672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283428643680).

163426620672 is an abundant number, since it is smaller than the sum of its proper divisors (403430666688).

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

163426620672 is a wasteful number, since it uses less digits than its factorization.

163426620672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533369 (or 533352 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 163426620672 in words is "one hundred sixty-three billion, four hundred twenty-six million, six hundred twenty thousand, six hundred seventy-two".