111820684816 has 45 divisors (see below), whose sum is σ = 222174631693. Its totient is φ = 54519923840.

The previous prime is 111820684783. The next prime is 111820684847. The reversal of 111820684816 is 618486028111.

The square root of 111820684816 is 334396.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5388147216 + 106432537600 = 73404^2 + 326240^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 54839925 + ... + 54841963.

Almost surely, 2^111820684816 is an apocalyptic number.

111820684816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

111820684816 is the 334396-th square number.

It is an amenable number.

111820684816 is a deficient number, since it is larger than the sum of its proper divisors (110353946877).

111820684816 is an frugal number, since it uses more digits than its factorization.

111820684816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4168 (or 2082 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 46.

The spelling of 111820684816 in words is "one hundred eleven billion, eight hundred twenty million, six hundred eighty-four thousand, eight hundred sixteen".