163664631311 has 8 divisors (see below), whose sum is σ = 165227634000. Its totient is φ = 162102746880.

The previous prime is 163664631307. The next prime is 163664631313. The reversal of 163664631311 is 113136466361.

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

It is a cyclic number.

It is not a de Polignac number, because 163664631311 - 2² = 163664631307 is a prime.

It is a super-2 number, since 2×163664631311² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163664631313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16031 + ... + 572351.

It is an arithmetic number, because the mean of its divisors is an integer number (20653454250).

Almost surely, 2^163664631311 is an apocalyptic number.

163664631311 is a deficient number, since it is larger than the sum of its proper divisors (1563002689).

163664631311 is a wasteful number, since it uses less digits than its factorization.

163664631311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559129.

The product of its digits is 139968, while the sum is 41.

The spelling of 163664631311 in words is "one hundred sixty-three billion, six hundred sixty-four million, six hundred thirty-one thousand, three hundred eleven".