111261142564243 has 8 divisors (see below), whose sum is σ = 127188103829760. Its totient is φ = 95342309380680.

The previous prime is 111261142564213. The next prime is 111261142564249. The reversal of 111261142564243 is 342465241162111.

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

It is a cyclic number.

It is not a de Polignac number, because 111261142564243 - 2²⁹ = 111260605693331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111261142564243.

It is not an unprimeable number, because it can be changed into a prime (111261142564249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2031991153 + ... + 2032045906.

It is an arithmetic number, because the mean of its divisors is an integer number (15898512978720).

Almost surely, 2^{111261142564243} is an apocalyptic number.

111261142564243 is a deficient number, since it is larger than the sum of its proper divisors (15926961265517).

111261142564243 is an equidigital number, since it uses as much as digits as its factorization.

111261142564243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4064040977.

The product of its digits is 276480, while the sum is 43.

The spelling of 111261142564243 in words is "one hundred eleven trillion, two hundred sixty-one billion, one hundred forty-two million, five hundred sixty-four thousand, two hundred forty-three".