111815334544 has 15 divisors (see below), whose sum is σ = 216644802217. Its totient is φ = 55906998496.

The previous prime is 111815334541. The next prime is 111815334551. The reversal of 111815334544 is 445433518111.

The square root of 111815334544 is 334388.

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., 59780250000 + 52035084544 = 244500^2 + 228112^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111815334497 and 111815334506.

It is not an unprimeable number, because it can be changed into a prime (111815334541) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1295754 + ... + 1379350.

Almost surely, 2^111815334544 is an apocalyptic number.

111815334544 is the 334388-th square number.

It is an amenable number.

111815334544 is a deficient number, since it is larger than the sum of its proper divisors (104829467673).

111815334544 is an frugal number, since it uses more digits than its factorization.

111815334544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167202 (or 83599 counting only the distinct ones).

The product of its digits is 115200, while the sum is 40.

The spelling of 111815334544 in words is "one hundred eleven billion, eight hundred fifteen million, three hundred thirty-four thousand, five hundred forty-four".