163138705304 has 16 divisors (see below), whose sum is σ = 305891529720. Its totient is φ = 81567630720.

The previous prime is 163138705241. The next prime is 163138705309. The reversal of 163138705304 is 403507831361.

It is a happy number.

It is a super-2 number, since 2×163138705304² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163138705309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245399 + ... + 621689.

Almost surely, 2^163138705304 is an apocalyptic number.

It is an amenable number.

163138705304 is a deficient number, since it is larger than the sum of its proper divisors (142752824416).

163138705304 is a wasteful number, since it uses less digits than its factorization.

163138705304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430490 (or 430486 counting only the distinct ones).

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

The spelling of 163138705304 in words is "one hundred sixty-three billion, one hundred thirty-eight million, seven hundred five thousand, three hundred four".