1666732495773 has 32 divisors (see below), whose sum is σ = 2422185891840. Its totient is φ = 1016230944960.

The previous prime is 1666732495763. The next prime is 1666732495777. The reversal of 1666732495773 is 3775942376661.

It is not a de Polignac number, because 1666732495773 - 2⁵ = 1666732495741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666732495777) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3837343 + ... + 4249548.

It is an arithmetic number, because the mean of its divisors is an integer number (75693309120).

Almost surely, 2^{1666732495773} is an apocalyptic number.

It is an amenable number.

1666732495773 is a deficient number, since it is larger than the sum of its proper divisors (755453396067).

1666732495773 is a wasteful number, since it uses less digits than its factorization.

1666732495773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8087049.

The product of its digits is 240045120, while the sum is 66.

The spelling of 1666732495773 in words is "one trillion, six hundred sixty-six billion, seven hundred thirty-two million, four hundred ninety-five thousand, seven hundred seventy-three".