1666804010760 has 512 divisors, whose sum is σ = 6511170355200. Its totient is φ = 371316234240.

The previous prime is 1666804010689. The next prime is 1666804010771. The reversal of 1666804010760 is 670104086661.

It is a super-2 number, since 2×1666804010760² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 403875817 + ... + 403879943.

It is an arithmetic number, because the mean of its divisors is an integer number (12717129600).

Almost surely, 2^{1666804010760} is an apocalyptic number.

1666804010760 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 1666804010760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3255585177600).

1666804010760 is an abundant number, since it is smaller than the sum of its proper divisors (4844366344440).

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

1666804010760 is a wasteful number, since it uses less digits than its factorization.

1666804010760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5498 (or 5488 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 1666804010760 in words is "one trillion, six hundred sixty-six billion, eight hundred four million, ten thousand, seven hundred sixty".