4146165002081 has 2 divisors, whose sum is σ = 4146165002082. Its totient is φ = 4146165002080.

The previous prime is 4146165002069. The next prime is 4146165002131. The reversal of 4146165002081 is 1802005616414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2625096646225 + 1521068355856 = 1620215^2 + 1233316^2 .

It is a cyclic number.

It is not a de Polignac number, because 4146165002081 - 2³⁰ = 4145091260257 is a prime.

It is a super-2 number, since 2×4146165002081² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4146165002051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2073082501040 + 2073082501041.

It is an arithmetic number, because the mean of its divisors is an integer number (2073082501041).

Almost surely, 2^{4146165002081} is an apocalyptic number.

It is an amenable number.

4146165002081 is a deficient number, since it is larger than the sum of its proper divisors (1).

4146165002081 is an equidigital number, since it uses as much as digits as its factorization.

4146165002081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 38.

The spelling of 4146165002081 in words is "four trillion, one hundred forty-six billion, one hundred sixty-five million, two thousand, eighty-one".