163138705344 has 112 divisors (see below), whose sum is σ = 507809296800. Its totient is φ = 51180761088.

The previous prime is 163138705343. The next prime is 163138705349. The reversal of 163138705344 is 443507831361.

163138705344 is a `hidden beast` number, since 1 + 6 + 31 + 3 + 87 + 0 + 534 + 4 = 666.

It is a super-2 number, since 2×163138705344² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 163138705344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163138705343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2747359 + ... + 2806110.

Almost surely, 2^163138705344 is an apocalyptic number.

It is an amenable number.

163138705344 is an abundant number, since it is smaller than the sum of its proper divisors (344670591456).

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

163138705344 is a wasteful number, since it uses less digits than its factorization.

163138705344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553507 (or 5553491 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 163138705344 in words is "one hundred sixty-three billion, one hundred thirty-eight million, seven hundred five thousand, three hundred forty-four".