1356066507666 has 128 divisors (see below), whose sum is σ = 3182132169216. Its totient is φ = 381480652800.

The previous prime is 1356066507623. The next prime is 1356066507703. The reversal of 1356066507666 is 6667056606531.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7002555 + ... + 7193601.

It is an arithmetic number, because the mean of its divisors is an integer number (24860407572).

Almost surely, 2^{1356066507666} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1356066507666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1591066084608).

1356066507666 is an abundant number, since it is smaller than the sum of its proper divisors (1826065661550).

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

1356066507666 is a wasteful number, since it uses less digits than its factorization.

1356066507666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191236.

The product of its (nonzero) digits is 24494400, while the sum is 57.

The spelling of 1356066507666 in words is "one trillion, three hundred fifty-six billion, sixty-six million, five hundred seven thousand, six hundred sixty-six".