111909463904 has 24 divisors (see below), whose sum is σ = 251796294288. Its totient is φ = 47961198720.

The previous prime is 111909463901. The next prime is 111909463933. The reversal of 111909463904 is 409364909111.

It is a super-2 number, since 2×111909463904² (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 (111909463901) 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 3 ways as a sum of consecutive naturals, for example, 249797687 + ... + 249798134.

It is an arithmetic number, because the mean of its divisors is an integer number (10491512262).

Almost surely, 2^111909463904 is an apocalyptic number.

111909463904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

111909463904 is an abundant number, since it is smaller than the sum of its proper divisors (139886830384).

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

111909463904 is an equidigital number, since it uses as much as digits as its factorization.

111909463904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499595838 (or 499595830 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 47.

The spelling of 111909463904 in words is "one hundred eleven billion, nine hundred nine million, four hundred sixty-three thousand, nine hundred four".