112643523721 has 8 divisors (see below), whose sum is σ = 112771955520. Its totient is φ = 112515136272.

The previous prime is 112643523719. The next prime is 112643523739. The reversal of 112643523721 is 127325346211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 112643523721 - 2¹ = 112643523719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112643529721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8730351 + ... + 8743243.

It is an arithmetic number, because the mean of its divisors is an integer number (14096494440).

Almost surely, 2^112643523721 is an apocalyptic number.

It is an amenable number.

112643523721 is a deficient number, since it is larger than the sum of its proper divisors (128431799).

112643523721 is a wasteful number, since it uses less digits than its factorization.

112643523721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22175.

The product of its digits is 60480, while the sum is 37.

Adding to 112643523721 its reverse (127325346211), we get a palindrome (239968869932).

The spelling of 112643523721 in words is "one hundred twelve billion, six hundred forty-three million, five hundred twenty-three thousand, seven hundred twenty-one".