163128704247941 has 16 divisors (see below), whose sum is σ = 167842322265456. Its totient is φ = 158431138315776.

The previous prime is 163128704247917. The next prime is 163128704248021. The reversal of 163128704247941 is 149742407821361.

It can be written as a sum of positive squares in 8 ways, for example, as 58813714380100 + 104314989867841 = 7669010^2 + 10213471^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163128704247941 is a prime.

It is a super-2 number, since 2×163128704247941² (a number of 29 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 (163128704247911) 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, 1353064835 + ... + 1353185391.

It is an arithmetic number, because the mean of its divisors is an integer number (10490145141591).

Almost surely, 2^{163128704247941} is an apocalyptic number.

It is an amenable number.

163128704247941 is a deficient number, since it is larger than the sum of its proper divisors (4713618017515).

163128704247941 is a wasteful number, since it uses less digits than its factorization.

163128704247941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186808.

The product of its (nonzero) digits is 16257024, while the sum is 59.

The spelling of 163128704247941 in words is "one hundred sixty-three trillion, one hundred twenty-eight billion, seven hundred four million, two hundred forty-seven thousand, nine hundred forty-one".