1659581960939 has 16 divisors (see below), whose sum is σ = 1936351296000. Its totient is φ = 1421779445352.

The previous prime is 1659581960929. The next prime is 1659581960999. The reversal of 1659581960939 is 9390691859561.

It is not a de Polignac number, because 1659581960939 - 2³⁶ = 1590862484203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1659581960929) 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, 543647 + ... + 1901240.

It is an arithmetic number, because the mean of its divisors is an integer number (121021956000).

Almost surely, 2^{1659581960939} is an apocalyptic number.

1659581960939 is a deficient number, since it is larger than the sum of its proper divisors (276769335061).

1659581960939 is an equidigital number, since it uses as much as digits as its factorization.

1659581960939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446887 (or 2446873 counting only the distinct ones).

The product of its (nonzero) digits is 141717600, while the sum is 71.

The spelling of 1659581960939 in words is "one trillion, six hundred fifty-nine billion, five hundred eighty-one million, nine hundred sixty thousand, nine hundred thirty-nine".