1666566165462 has 64 divisors (see below), whose sum is σ = 3640808563200. Its totient is φ = 504372718080.

The previous prime is 1666566165457. The next prime is 1666566165463. The reversal of 1666566165462 is 2645616656661.

It is a junction number, because it is equal to n+sod(n) for n = 1666566165396 and 1666566165405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666566165463) 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, 200376528 + ... + 200384844.

It is an arithmetic number, because the mean of its divisors is an integer number (56887633800).

Almost surely, 2^{1666566165462} is an apocalyptic number.

1666566165462 is an abundant number, since it is smaller than the sum of its proper divisors (1974242397738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1666566165462 is a wasteful number, since it uses less digits than its factorization.

1666566165462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11861.

The product of its digits is 55987200, while the sum is 60.

The spelling of 1666566165462 in words is "one trillion, six hundred sixty-six billion, five hundred sixty-six million, one hundred sixty-five thousand, four hundred sixty-two".