111565000015663 has 4 divisors (see below), whose sum is σ = 111584106889120. Its totient is φ = 111545893142208.

The previous prime is 111565000015661. The next prime is 111565000015709. The reversal of 111565000015663 is 366510000565111.

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

It is a cyclic number.

It is not a de Polignac number, because 111565000015663 - 2¹ = 111565000015661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111565000015661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9553427970 + ... + 9553439647.

It is an arithmetic number, because the mean of its divisors is an integer number (27896026722280).

Almost surely, 2^{111565000015663} is an apocalyptic number.

111565000015663 is a deficient number, since it is larger than the sum of its proper divisors (19106873457).

111565000015663 is an equidigital number, since it uses as much as digits as its factorization.

111565000015663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19106873456.

The product of its (nonzero) digits is 81000, while the sum is 40.

The spelling of 111565000015663 in words is "one hundred eleven trillion, five hundred sixty-five billion, fifteen thousand, six hundred sixty-three".