111405727869 has 8 divisors (see below), whose sum is σ = 148653421632. Its totient is φ = 74214259680.

The previous prime is 111405727817. The next prime is 111405727919. The reversal of 111405727869 is 968727504111.

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

It is not a de Polignac number, because 111405727869 - 2⁸ = 111405727613 is a prime.

It is a super-2 number, since 2×111405727869² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111405707869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14051769 + ... + 14059694.

It is an arithmetic number, because the mean of its divisors is an integer number (18581677704).

Almost surely, 2^111405727869 is an apocalyptic number.

It is an amenable number.

111405727869 is a deficient number, since it is larger than the sum of its proper divisors (37247693763).

111405727869 is a wasteful number, since it uses less digits than its factorization.

111405727869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28112787.

The product of its (nonzero) digits is 846720, while the sum is 51.

The spelling of 111405727869 in words is "one hundred eleven billion, four hundred five million, seven hundred twenty-seven thousand, eight hundred sixty-nine".