1641662971163 has 4 divisors (see below), whose sum is σ = 1646235848880. Its totient is φ = 1637090093448.

The previous prime is 1641662971141. The next prime is 1641662971171. The reversal of 1641662971163 is 3611792661461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1641662971163 - 2¹⁰ = 1641662970139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1641662071163) 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, 2286438320 + ... + 2286439037.

It is an arithmetic number, because the mean of its divisors is an integer number (411558962220).

Almost surely, 2^{1641662971163} is an apocalyptic number.

1641662971163 is a deficient number, since it is larger than the sum of its proper divisors (4572877717).

1641662971163 is an equidigital number, since it uses as much as digits as its factorization.

1641662971163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4572877716.

The product of its digits is 1959552, while the sum is 53.

The spelling of 1641662971163 in words is "one trillion, six hundred forty-one billion, six hundred sixty-two million, nine hundred seventy-one thousand, one hundred sixty-three".