1666233192960 has 2240 divisors, whose sum is σ = 7406552736000. Its totient is φ = 358174752768.

The previous prime is 1666233192931. The next prime is 1666233192983. The reversal of 1666233192960 is 692913326661.

It is a tau number, because it is divible by the number of its divisors (2240).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1666233192897 and 1666233192906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 12162286012 + ... + 12162286148.

Almost surely, 2^{1666233192960} is an apocalyptic number.

1666233192960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1666233192960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3703276368000).

1666233192960 is an abundant number, since it is smaller than the sum of its proper divisors (5740319543040).

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

1666233192960 is an frugal number, since it uses more digits than its factorization.

1666233192960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 54.

The spelling of 1666233192960 in words is "one trillion, six hundred sixty-six billion, two hundred thirty-three million, one hundred ninety-two thousand, nine hundred sixty".