1666555000662 has 16 divisors (see below), whose sum is σ = 3333122735040. Its totient is φ = 555516211272.

The previous prime is 1666555000657. The next prime is 1666555000673. The reversal of 1666555000662 is 2660005556661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2520289 + ... + 3112067.

It is an arithmetic number, because the mean of its divisors is an integer number (208320170940).

Almost surely, 2^{1666555000662} is an apocalyptic number.

1666555000662 is an abundant number, since it is smaller than the sum of its proper divisors (1666567734378).

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

1666555000662 is a wasteful number, since it uses less digits than its factorization.

1666555000662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061147.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 1666555000662 in words is "one trillion, six hundred sixty-six billion, five hundred fifty-five million, six hundred sixty-two", and thus it is an aban number.