163475867772 has 144 divisors (see below), whose sum is σ = 500217681600. Its totient is φ = 43944615936.

The previous prime is 163475867749. The next prime is 163475867813. The reversal of 163475867772 is 277768574361.

163475867772 is a `hidden beast` number, since 1 + 6 + 3 + 47 + 586 + 7 + 7 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18061104 + ... + 18070152.

It is an arithmetic number, because the mean of its divisors is an integer number (3473733900).

Almost surely, 2^163475867772 is an apocalyptic number.

163475867772 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 163475867772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250108840800).

163475867772 is an abundant number, since it is smaller than the sum of its proper divisors (336741813828).

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

163475867772 is a wasteful number, since it uses less digits than its factorization.

163475867772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13300 (or 13295 counting only the distinct ones).

The product of its digits is 82978560, while the sum is 63.

The spelling of 163475867772 in words is "one hundred sixty-three billion, four hundred seventy-five million, eight hundred sixty-seven thousand, seven hundred seventy-two".