1689117738361 has 4 divisors (see below), whose sum is σ = 1689158926224. Its totient is φ = 1689076550500.

The previous prime is 1689117738323. The next prime is 1689117738403. The reversal of 1689117738361 is 1638377119861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1689117738361 - 2¹³ = 1689117730169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1689117738361.

It is not an unprimeable number, because it can be changed into a prime (1689117738311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20532355 + ... + 20614456.

It is an arithmetic number, because the mean of its divisors is an integer number (422289731556).

Almost surely, 2^{1689117738361} is an apocalyptic number.

It is an amenable number.

1689117738361 is a deficient number, since it is larger than the sum of its proper divisors (41187863).

1689117738361 is an equidigital number, since it uses as much as digits as its factorization.

1689117738361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41187862.

The product of its digits is 9144576, while the sum is 61.

The spelling of 1689117738361 in words is "one trillion, six hundred eighty-nine billion, one hundred seventeen million, seven hundred thirty-eight thousand, three hundred sixty-one".