111412721378268 has 90 divisors (see below), whose sum is σ = 295299313021944. Its totient is φ = 36628839337536.

The previous prime is 111412721378219. The next prime is 111412721378293. The reversal of 111412721378268 is 862873127214111.

111412721378268 is a `hidden beast` number, since 1 + 1 + 1 + 4 + 1 + 2 + 7 + 2 + 1 + 378 + 268 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 30537096 + ... + 33990287.

Almost surely, 2^{111412721378268} is an apocalyptic number.

111412721378268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

111412721378268 is an abundant number, since it is smaller than the sum of its proper divisors (183886591643676).

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

111412721378268 is an equidigital number, since it uses as much as digits as its factorization.

111412721378268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64527545 (or 64527461 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 54.

The spelling of 111412721378268 in words is "one hundred eleven trillion, four hundred twelve billion, seven hundred twenty-one million, three hundred seventy-eight thousand, two hundred sixty-eight".