3561110516666 has 4 divisors (see below), whose sum is σ = 5341665775002. Its totient is φ = 1780555258332.

The previous prime is 3561110516657. The next prime is 3561110516687. The reversal of 3561110516666 is 6666150111653.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2654035232641 + 907075284025 = 1629121^2 + 952405^2 .

It is a super-2 number, since 2×3561110516666² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3561110516666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 890277629165 + ... + 890277629168.

Almost surely, 2^{3561110516666} is an apocalyptic number.

3561110516666 is a deficient number, since it is larger than the sum of its proper divisors (1780555258336).

3561110516666 is a wasteful number, since it uses less digits than its factorization.

3561110516666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780555258335.

The product of its (nonzero) digits is 583200, while the sum is 47.

The spelling of 3561110516666 in words is "three trillion, five hundred sixty-one billion, one hundred ten million, five hundred sixteen thousand, six hundred sixty-six".