111719478816 has 144 divisors (see below), whose sum is σ = 366971780448. Its totient is φ = 31862937600.

The previous prime is 111719478803. The next prime is 111719478841. The reversal of 111719478816 is 618874917111.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 983350 + ... + 1091061.

It is an arithmetic number, because the mean of its divisors is an integer number (2548415142).

Almost surely, 2^111719478816 is an apocalyptic number.

111719478816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

111719478816 is an abundant number, since it is smaller than the sum of its proper divisors (255252301632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111719478816 is a wasteful number, since it uses less digits than its factorization.

111719478816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074455 (or 2074444 counting only the distinct ones).

The product of its digits is 677376, while the sum is 54.

The spelling of 111719478816 in words is "one hundred eleven billion, seven hundred nineteen million, four hundred seventy-eight thousand, eight hundred sixteen".