1641663752889 has 16 divisors (see below), whose sum is σ = 2227422168000. Its totient is φ = 1075197877056.

The previous prime is 1641663752881. The next prime is 1641663752917. The reversal of 1641663752889 is 9882573661461.

It is not a de Polignac number, because 1641663752889 - 2³ = 1641663752881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1641663752881) 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, 2719674 + ... + 3268019.

It is an arithmetic number, because the mean of its divisors is an integer number (139213885500).

Almost surely, 2^{1641663752889} is an apocalyptic number.

It is an amenable number.

1641663752889 is a deficient number, since it is larger than the sum of its proper divisors (585758415111).

1641663752889 is a wasteful number, since it uses less digits than its factorization.

1641663752889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5989304.

The product of its digits is 104509440, while the sum is 66.

The spelling of 1641663752889 in words is "one trillion, six hundred forty-one billion, six hundred sixty-three million, seven hundred fifty-two thousand, eight hundred eighty-nine".