163563866704 has 60 divisors (see below), whose sum is σ = 374688045588. Its totient is φ = 68949619200.

The previous prime is 163563866701. The next prime is 163563866707. The reversal of 163563866704 is 407668365361.

It is an interprime number because it is at equal distance from previous prime (163563866701) and next prime (163563866707).

It can be written as a sum of positive squares in 2 ways, for example, as 18747086400 + 144816780304 = 136920^2 + 380548^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163563866701) 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, 1662237 + ... + 1757884.

Almost surely, 2^163563866704 is an apocalyptic number.

163563866704 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

163563866704 is an abundant number, since it is smaller than the sum of its proper divisors (211124178884).

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

163563866704 is a wasteful number, since it uses less digits than its factorization.

163563866704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3420204 (or 3420191 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 55.

The spelling of 163563866704 in words is "one hundred sixty-three billion, five hundred sixty-three million, eight hundred sixty-six thousand, seven hundred four".