1659519998944 has 48 divisors (see below), whose sum is σ = 3295901387520. Its totient is φ = 822492558720.

The previous prime is 1659519998897. The next prime is 1659519998989. The reversal of 1659519998944 is 4498999159561.

It is a super-3 number, since 3×1659519998944³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 1557129 + ... + 2396599.

It is an arithmetic number, because the mean of its divisors is an integer number (68664612240).

Almost surely, 2^{1659519998944} is an apocalyptic number.

It is an amenable number.

1659519998944 is a deficient number, since it is larger than the sum of its proper divisors (1636381388576).

1659519998944 is a wasteful number, since it uses less digits than its factorization.

1659519998944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840023 (or 840015 counting only the distinct ones).

The product of its digits is 1133740800, while the sum is 79.

The spelling of 1659519998944 in words is "one trillion, six hundred fifty-nine billion, five hundred nineteen million, nine hundred ninety-eight thousand, nine hundred forty-four".