111878807858 has 16 divisors (see below), whose sum is σ = 169157458944. Its totient is φ = 55493540640.

The previous prime is 111878807813. The next prime is 111878807891. The reversal of 111878807858 is 858708878111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 111878807858.

It is an unprimeable number.

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, 270143 + ... + 544733.

It is an arithmetic number, because the mean of its divisors is an integer number (10572341184).

Almost surely, 2^111878807858 is an apocalyptic number.

111878807858 is a deficient number, since it is larger than the sum of its proper divisors (57278651086).

111878807858 is a wasteful number, since it uses less digits than its factorization.

111878807858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276217.

The product of its (nonzero) digits is 8028160, while the sum is 62.

The spelling of 111878807858 in words is "one hundred eleven billion, eight hundred seventy-eight million, eight hundred seven thousand, eight hundred fifty-eight".