10001615511161 has 2 divisors, whose sum is σ = 10001615511162. Its totient is φ = 10001615511160.

The previous prime is 10001615511157. The next prime is 10001615511187. The reversal of 10001615511161 is 16111551610001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9992357222761 + 9258288400 = 3161069^2 + 96220^2 .

It is a cyclic number.

It is not a de Polignac number, because 10001615511161 - 2² = 10001615511157 is a prime.

It is a super-2 number, since 2×10001615511161² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10001618511161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000807755580 + 5000807755581.

It is an arithmetic number, because the mean of its divisors is an integer number (5000807755581).

Almost surely, 2^{10001615511161} is an apocalyptic number.

It is an amenable number.

10001615511161 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001615511161 is an equidigital number, since it uses as much as digits as its factorization.

10001615511161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 29.

The spelling of 10001615511161 in words is "ten trillion, one billion, six hundred fifteen million, five hundred eleven thousand, one hundred sixty-one".