1666666833433 has 8 divisors (see below), whose sum is σ = 1904844287552. Its totient is φ = 1428509927376.

The previous prime is 1666666833427. The next prime is 1666666833439. The reversal of 1666666833433 is 3343386666661.

It is an interprime number because it is at equal distance from previous prime (1666666833427) and next prime (1666666833439).

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

It is not a de Polignac number, because 1666666833433 - 2³⁷ = 1529227879961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1666666833439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4962810 + ... + 5287987.

It is an arithmetic number, because the mean of its divisors is an integer number (238105535944).

Almost surely, 2^{1666666833433} is an apocalyptic number.

It is an amenable number.

1666666833433 is a deficient number, since it is larger than the sum of its proper divisors (238177454119).

1666666833433 is a wasteful number, since it uses less digits than its factorization.

1666666833433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10274031.

The product of its digits is 120932352, while the sum is 61.

The spelling of 1666666833433 in words is "one trillion, six hundred sixty-six billion, six hundred sixty-six million, eight hundred thirty-three thousand, four hundred thirty-three".