1087144065666 has 12 divisors (see below), whose sum is σ = 2355478808982. Its totient is φ = 362381355216.

The previous prime is 1087144065619. The next prime is 1087144065697. The reversal of 1087144065666 is 6665604417801.

It can be written as a sum of positive squares in only one way, i.e., 928438238025 + 158705827641 = 963555^2 + 398379^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30198446251 + ... + 30198446286.

Almost surely, 2^{1087144065666} is an apocalyptic number.

1087144065666 is an abundant number, since it is smaller than the sum of its proper divisors (1268334743316).

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

1087144065666 is a wasteful number, since it uses less digits than its factorization.

1087144065666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60396892545 (or 60396892542 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 1087144065666 in words is "one trillion, eighty-seven billion, one hundred forty-four million, sixty-five thousand, six hundred sixty-six".