8161202648345 has 16 divisors (see below), whose sum is σ = 9817698850320. Its totient is φ = 6512792684544.

The previous prime is 8161202648321. The next prime is 8161202648359. The reversal of 8161202648345 is 5438462021618.

It can be written as a sum of positive squares in 8 ways, for example, as 449829100249 + 7711373548096 = 670693^2 + 2776936^2 .

It is a cyclic number.

It is not a de Polignac number, because 8161202648345 - 2¹⁶ = 8161202582809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8161202648293 and 8161202648302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128093537 + ... + 128157233.

It is an arithmetic number, because the mean of its divisors is an integer number (613606178145).

Almost surely, 2^{8161202648345} is an apocalyptic number.

It is an amenable number.

8161202648345 is a deficient number, since it is larger than the sum of its proper divisors (1656496201975).

8161202648345 is a wasteful number, since it uses less digits than its factorization.

8161202648345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126764.

The product of its (nonzero) digits is 2211840, while the sum is 50.

The spelling of 8161202648345 in words is "eight trillion, one hundred sixty-one billion, two hundred two million, six hundred forty-eight thousand, three hundred forty-five".