1666052707375 has 32 divisors (see below), whose sum is σ = 2376602542080. Its totient is φ = 1142274909600.

The previous prime is 1666052707337. The next prime is 1666052707391. The reversal of 1666052707375 is 5737072506661.

It is a happy number.

It is not a de Polignac number, because 1666052707375 - 2⁷ = 1666052707247 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6241906 + ... + 6503344.

It is an arithmetic number, because the mean of its divisors is an integer number (74268829440).

Almost surely, 2^{1666052707375} is an apocalyptic number.

1666052707375 is a deficient number, since it is larger than the sum of its proper divisors (710549834705).

1666052707375 is an equidigital number, since it uses as much as digits as its factorization.

1666052707375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268744 (or 268734 counting only the distinct ones).

The product of its (nonzero) digits is 11113200, while the sum is 55.

The spelling of 1666052707375 in words is "one trillion, six hundred sixty-six billion, fifty-two million, seven hundred seven thousand, three hundred seventy-five".