111605207434 has 128 divisors (see below), whose sum is σ = 217689292800. Its totient is φ = 41766451200.

The previous prime is 111605207431. The next prime is 111605207449. The reversal of 111605207434 is 434702506111.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 111605207434.

It is not an unprimeable number, because it can be changed into a prime (111605207431) 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 63 ways as a sum of consecutive naturals, for example, 49844887 + ... + 49847125.

It is an arithmetic number, because the mean of its divisors is an integer number (1700697600).

Almost surely, 2^111605207434 is an apocalyptic number.

111605207434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

111605207434 is a deficient number, since it is larger than the sum of its proper divisors (106084085366).

111605207434 is a wasteful number, since it uses less digits than its factorization.

111605207434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 111605207434 in words is "one hundred eleven billion, six hundred five million, two hundred seven thousand, four hundred thirty-four".