1659278323992 has 64 divisors (see below), whose sum is σ = 4187505237120. Its totient is φ = 547852855808.

The previous prime is 1659278323933. The next prime is 1659278323993. The reversal of 1659278323992 is 2993238729561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1659278323993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22116688 + ... + 22191584.

It is an arithmetic number, because the mean of its divisors is an integer number (65429769330).

Almost surely, 2^{1659278323992} is an apocalyptic number.

1659278323992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1659278323992 is an abundant number, since it is smaller than the sum of its proper divisors (2528226913128).

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

1659278323992 is a wasteful number, since it uses less digits than its factorization.

1659278323992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83640 (or 83636 counting only the distinct ones).

The product of its digits is 88179840, while the sum is 66.

The spelling of 1659278323992 in words is "one trillion, six hundred fifty-nine billion, two hundred seventy-eight million, three hundred twenty-three thousand, nine hundred ninety-two".