1666745190934 has 8 divisors (see below), whose sum is σ = 2500123275000. Its totient is φ = 833370765936.

The previous prime is 1666745190923. The next prime is 1666745190941. The reversal of 1666745190934 is 4390915476661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1666745190934² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1225857 + ... + 2199139.

It is an arithmetic number, because the mean of its divisors is an integer number (312515409375).

Almost surely, 2^{1666745190934} is an apocalyptic number.

1666745190934 is a deficient number, since it is larger than the sum of its proper divisors (833378084066).

1666745190934 is an equidigital number, since it uses as much as digits as its factorization.

1666745190934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829534.

The product of its (nonzero) digits is 29393280, while the sum is 61.

The spelling of 1666745190934 in words is "one trillion, six hundred sixty-six billion, seven hundred forty-five million, one hundred ninety thousand, nine hundred thirty-four".