112640140161 has 16 divisors (see below), whose sum is σ = 168986617600. Its totient is φ = 74142875664.

The previous prime is 112640140157. The next prime is 112640140199. The reversal of 112640140161 is 161041046211.

112640140161 is a `hidden beast` number, since 1 + 1 + 2 + 640 + 1 + 4 + 0 + 16 + 1 = 666.

It is not a de Polignac number, because 112640140161 - 2² = 112640140157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112640140061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26402026 + ... + 26406291.

It is an arithmetic number, because the mean of its divisors is an integer number (10561663600).

Almost surely, 2^112640140161 is an apocalyptic number.

It is an amenable number.

112640140161 is a deficient number, since it is larger than the sum of its proper divisors (56346477439).

112640140161 is an equidigital number, since it uses as much as digits as its factorization.

112640140161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52808405 (or 52808399 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

Adding to 112640140161 its reverse (161041046211), we get a palindrome (273681186372).

The spelling of 112640140161 in words is "one hundred twelve billion, six hundred forty million, one hundred forty thousand, one hundred sixty-one".