1675716750666 has 96 divisors (see below), whose sum is σ = 4336730124480. Its totient is φ = 478229627232.

The previous prime is 1675716750623. The next prime is 1675716750671. The reversal of 1675716750666 is 6660576175761.

It is a happy number.

It is a super-2 number, since 2×1675716750666² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1959481 + ... + 2681603.

It is an arithmetic number, because the mean of its divisors is an integer number (45174272130).

Almost surely, 2^{1675716750666} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1675716750666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2168365062240).

1675716750666 is an abundant number, since it is smaller than the sum of its proper divisors (2661013373814).

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

1675716750666 is a wasteful number, since it uses less digits than its factorization.

1675716750666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723025 (or 723012 counting only the distinct ones).

The product of its (nonzero) digits is 66679200, while the sum is 63.

The spelling of 1675716750666 in words is "one trillion, six hundred seventy-five billion, seven hundred sixteen million, seven hundred fifty thousand, six hundred sixty-six".