111812659456 has 27 divisors (see below), whose sum is σ = 223199230611. Its totient is φ = 55903654656.

The previous prime is 111812659397. The next prime is 111812659457. The reversal of 111812659456 is 654956218111.

It is a happy number.

The square root of 111812659456 is 334384.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111812659457) 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, 5339695 + ... + 5360593.

Almost surely, 2^111812659456 is an apocalyptic number.

111812659456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

111812659456 is the 334384-th square number.

It is an amenable number.

111812659456 is a deficient number, since it is larger than the sum of its proper divisors (111386571155).

111812659456 is an frugal number, since it uses more digits than its factorization.

111812659456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41814 (or 20901 counting only the distinct ones).

The product of its digits is 518400, while the sum is 49.

Multiplying 111812659456 by its sum of digits (49), we get a square (5478820313344 = 2340688²).

The spelling of 111812659456 in words is "one hundred eleven billion, eight hundred twelve million, six hundred fifty-nine thousand, four hundred fifty-six".