111469844641 has 3 divisors (see below), whose sum is σ = 111470178513. Its totient is φ = 111469510770.

The previous prime is 111469844639. The next prime is 111469844693. The reversal of 111469844641 is 146448964111.

The square root of 111469844641 is 333871.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 146448964111 = 349 ⋅419624539.

It is not a de Polignac number, because 111469844641 - 2¹ = 111469844639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111469841641) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 166936 + ... + 500806.

It is an arithmetic number, because the mean of its divisors is an integer number (37156726171).

Almost surely, 2^111469844641 is an apocalyptic number.

111469844641 is the 333871-st square number.

111469844641 is the 166936-th centered octagonal number.

It is an amenable number.

111469844641 is a deficient number, since it is larger than the sum of its proper divisors (333872).

111469844641 is an frugal number, since it uses more digits than its factorization.

111469844641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667742 (or 333871 counting only the distinct ones).

The product of its digits is 663552, while the sum is 49.

Multiplying 111469844641 by its sum of digits (49), we get a square (5462022387409 = 2337097²).

The spelling of 111469844641 in words is "one hundred eleven billion, four hundred sixty-nine million, eight hundred forty-four thousand, six hundred forty-one".