112643164645 has 24 divisors (see below), whose sum is σ = 149892199128. Its totient is φ = 81197276160.

The previous prime is 112643164643. The next prime is 112643164649. The reversal of 112643164645 is 546461346211.

It can be written as a sum of positive squares in 4 ways, for example, as 11701614276 + 100941550369 = 108174^2 + 317713^2 .

It is not a de Polignac number, because 112643164645 - 2¹ = 112643164643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112643164643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 755472 + ... + 892201.

It is an arithmetic number, because the mean of its divisors is an integer number (6245508297).

Almost surely, 2^112643164645 is an apocalyptic number.

It is an amenable number.

112643164645 is a deficient number, since it is larger than the sum of its proper divisors (37249034483).

112643164645 is a wasteful number, since it uses less digits than its factorization.

112643164645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647813 (or 1647802 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The spelling of 112643164645 in words is "one hundred twelve billion, six hundred forty-three million, one hundred sixty-four thousand, six hundred forty-five".