1666673434275 has 12 divisors (see below), whose sum is σ = 2755566744792. Its totient is φ = 888892498240.

The previous prime is 1666673434267. The next prime is 1666673434313. The reversal of 1666673434275 is 5724343766661.

It is not a de Polignac number, because 1666673434275 - 2³ = 1666673434267 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11111156154 + ... + 11111156303.

It is an arithmetic number, because the mean of its divisors is an integer number (229630562066).

Almost surely, 2^{1666673434275} is an apocalyptic number.

1666673434275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1666673434275 is a deficient number, since it is larger than the sum of its proper divisors (1088893310517).

1666673434275 is a wasteful number, since it uses less digits than its factorization.

1666673434275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22222312470 (or 22222312465 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 60.

The spelling of 1666673434275 in words is "one trillion, six hundred sixty-six billion, six hundred seventy-three million, four hundred thirty-four thousand, two hundred seventy-five".