111111110099965 has 8 divisors (see below), whose sum is σ = 133333823982168. Its totient is φ = 88888560171840.

The previous prime is 111111110099939. The next prime is 111111110099989. The reversal of 111111110099965 is 569990011111111.

It can be written as a sum of positive squares in 4 ways, for example, as 4301799550084 + 106809310549881 = 2074078^2 + 10334859^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111111110099965 - 2¹⁵ = 111111110067197 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 39492622 + ... + 42212431.

It is an arithmetic number, because the mean of its divisors is an integer number (16666727997771).

Almost surely, 2^{111111110099965} is an apocalyptic number.

It is an amenable number.

111111110099965 is a deficient number, since it is larger than the sum of its proper divisors (22222713882203).

111111110099965 is an equidigital number, since it uses as much as digits as its factorization.

111111110099965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81977039.

The product of its (nonzero) digits is 21870, while the sum is 46.

The spelling of 111111110099965 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred ten million, ninety-nine thousand, nine hundred sixty-five".