1659746655616 has 64 divisors (see below), whose sum is σ = 3779614080000. Its totient is φ = 711183223296.

The previous prime is 1659746655557. The next prime is 1659746655629. The reversal of 1659746655616 is 6165566479561.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4554535 + ... + 4905433.

It is an arithmetic number, because the mean of its divisors is an integer number (59056470000).

Almost surely, 2^{1659746655616} is an apocalyptic number.

1659746655616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1659746655616 is an abundant number, since it is smaller than the sum of its proper divisors (2119867424384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1659746655616 is an equidigital number, since it uses as much as digits as its factorization.

1659746655616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356199 (or 356187 counting only the distinct ones).

The product of its digits is 244944000, while the sum is 67.

The spelling of 1659746655616 in words is "one trillion, six hundred fifty-nine billion, seven hundred forty-six million, six hundred fifty-five thousand, six hundred sixteen".