1665535134216 has 32 divisors (see below), whose sum is σ = 4163869812960. Its totient is φ = 555174114432.

The previous prime is 1665535134187. The next prime is 1665535134223. The reversal of 1665535134216 is 6124315355661.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5278191 + ... + 5584833.

It is an arithmetic number, because the mean of its divisors is an integer number (130120931655).

Almost surely, 2^{1665535134216} is an apocalyptic number.

It is an amenable number.

1665535134216 is an abundant number, since it is smaller than the sum of its proper divisors (2498334678744).

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

1665535134216 is a wasteful number, since it uses less digits than its factorization.

1665535134216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532965 (or 532961 counting only the distinct ones).

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

The spelling of 1665535134216 in words is "one trillion, six hundred sixty-five billion, five hundred thirty-five million, one hundred thirty-four thousand, two hundred sixteen".