1116665101638 has 12 divisors (see below), whose sum is σ = 2419441053588. Its totient is φ = 372221700540.

The previous prime is 1116665101637. The next prime is 1116665101661. The reversal of 1116665101638 is 8361015666111.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1116665101593 and 1116665101602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116665101637) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 31018475028 + ... + 31018475063.

It is an arithmetic number, because the mean of its divisors is an integer number (201620087799).

Almost surely, 2^{1116665101638} is an apocalyptic number.

1116665101638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1116665101638 is an abundant number, since it is smaller than the sum of its proper divisors (1302775951950).

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

1116665101638 is a wasteful number, since it uses less digits than its factorization.

1116665101638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62036950099 (or 62036950096 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 1116665101638 in words is "one trillion, one hundred sixteen billion, six hundred sixty-five million, one hundred one thousand, six hundred thirty-eight".