163138705345 has 32 divisors (see below), whose sum is σ = 245994356736. Its totient is φ = 100896062400.

The previous prime is 163138705343. The next prime is 163138705349. The reversal of 163138705345 is 543507831361.

It is not a de Polignac number, because 163138705345 - 2¹ = 163138705343 is a prime.

It is a super-2 number, since 2×163138705345² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163138705295 and 163138705304.

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 31 ways as a sum of consecutive naturals, for example, 1619361 + ... + 1717150.

It is an arithmetic number, because the mean of its divisors is an integer number (7687323648).

Almost surely, 2^163138705345 is an apocalyptic number.

It is an amenable number.

163138705345 is a deficient number, since it is larger than the sum of its proper divisors (82855651391).

163138705345 is a wasteful number, since it uses less digits than its factorization.

163138705345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336661.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 163138705345 in words is "one hundred sixty-three billion, one hundred thirty-eight million, seven hundred five thousand, three hundred forty-five".