1666850926852 has 12 divisors (see below), whose sum is σ = 2917054754460. Its totient is φ = 833406711296.

The previous prime is 1666850926817. The next prime is 1666850926877. The reversal of 1666850926852 is 2586290586661.

It can be written as a sum of positive squares in 2 ways, for example, as 529334822916 + 1137516103936 = 727554^2 + 1066544^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4487077 + ... + 4844332.

It is an arithmetic number, because the mean of its divisors is an integer number (243087896205).

Almost surely, 2^{1666850926852} is an apocalyptic number.

It is an amenable number.

1666850926852 is a deficient number, since it is larger than the sum of its proper divisors (1250203827608).

1666850926852 is a wasteful number, since it uses less digits than its factorization.

1666850926852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9376070 (or 9376068 counting only the distinct ones).

The product of its (nonzero) digits is 74649600, while the sum is 64.

The spelling of 1666850926852 in words is "one trillion, six hundred sixty-six billion, eight hundred fifty million, nine hundred twenty-six thousand, eight hundred fifty-two".