163564405131 has 8 divisors (see below), whose sum is σ = 219530151424. Its totient is φ = 108320797800.

The previous prime is 163564405111. The next prime is 163564405133. The reversal of 163564405131 is 131504465361.

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

It is not a de Polignac number, because 163564405131 - 2¹¹ = 163564403083 is a prime.

It is a super-2 number, since 2×163564405131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163564405131.

It is not an unprimeable number, because it can be changed into a prime (163564405133) 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, 180534211 + ... + 180535116.

It is an arithmetic number, because the mean of its divisors is an integer number (27441268928).

Almost surely, 2^163564405131 is an apocalyptic number.

163564405131 is a deficient number, since it is larger than the sum of its proper divisors (55965746293).

163564405131 is a wasteful number, since it uses less digits than its factorization.

163564405131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361069481.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 163564405131 in words is "one hundred sixty-three billion, five hundred sixty-four million, four hundred five thousand, one hundred thirty-one".