163372532081 has 8 divisors (see below), whose sum is σ = 184370256000. Its totient is φ = 143399087440.

The previous prime is 163372532051. The next prime is 163372532093. The reversal of 163372532081 is 180235273361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163372532081 is a prime.

It is a super-2 number, since 2×163372532081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163372532051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256069481 + ... + 256070118.

It is an arithmetic number, because the mean of its divisors is an integer number (23046282000).

Almost surely, 2^163372532081 is an apocalyptic number.

163372532081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

163372532081 is a deficient number, since it is larger than the sum of its proper divisors (20997723919).

163372532081 is a wasteful number, since it uses less digits than its factorization.

163372532081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512139639.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 163372532081 in words is "one hundred sixty-three billion, three hundred seventy-two million, five hundred thirty-two thousand, eighty-one".