163563447051 has 12 divisors (see below), whose sum is σ = 236263193712. Its totient is φ = 109040045136.

The previous prime is 163563447049. The next prime is 163563447163. The reversal of 163563447051 is 150744365361.

163563447051 is a `hidden beast` number, since 1 + 6 + 3 + 5 + 634 + 4 + 7 + 0 + 5 + 1 = 666.

It is not a de Polignac number, because 163563447051 - 2¹ = 163563447049 is a prime.

It is a super-2 number, since 2×163563447051² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163563446988 and 163563447006.

It is not an unprimeable number, because it can be changed into a prime (163563447031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 354490 + ... + 672896.

It is an arithmetic number, because the mean of its divisors is an integer number (19688599476).

Almost surely, 2^163563447051 is an apocalyptic number.

163563447051 is a deficient number, since it is larger than the sum of its proper divisors (72699746661).

163563447051 is a wasteful number, since it uses less digits than its factorization.

163563447051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375490 (or 375487 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 163563447051 in words is "one hundred sixty-three billion, five hundred sixty-three million, four hundred forty-seven thousand, fifty-one".