1112668438561 has 3 divisors (see below), whose sum is σ = 1112669493393. Its totient is φ = 1112667383730.

The previous prime is 1112668438549. The next prime is 1112668438577. The reversal of 1112668438561 is 1658348662111.

The square root of 1112668438561 is 1054831.

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.

It is not a de Polignac number, because 1112668438561 - 2¹⁹ = 1112667914273 is a prime.

It is a super-3 number, since 3×1112668438561³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112668438499 and 1112668438508.

It is not an unprimeable number, because it can be changed into a prime (1112668438061) 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, 527416 + ... + 1582246.

It is an arithmetic number, because the mean of its divisors is an integer number (370889831131).

Almost surely, 2^{1112668438561} is an apocalyptic number.

1112668438561 is the 1054831-st square number.

1112668438561 is the 527416-th centered octagonal number.

It is an amenable number.

1112668438561 is a deficient number, since it is larger than the sum of its proper divisors (1054832).

1112668438561 is an frugal number, since it uses more digits than its factorization.

1112668438561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109662 (or 1054831 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 52.

The spelling of 1112668438561 in words is "one trillion, one hundred twelve billion, six hundred sixty-eight million, four hundred thirty-eight thousand, five hundred sixty-one".