112640142561 has 4 divisors (see below), whose sum is σ = 150186856752. Its totient is φ = 75093428372.

The previous prime is 112640142547. The next prime is 112640142617. The reversal of 112640142561 is 165241046211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 112640142561 - 2²³ = 112631753953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (112640142521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18773357091 + ... + 18773357096.

It is an arithmetic number, because the mean of its divisors is an integer number (37546714188).

Almost surely, 2^112640142561 is an apocalyptic number.

It is an amenable number.

112640142561 is a deficient number, since it is larger than the sum of its proper divisors (37546714191).

112640142561 is an equidigital number, since it uses as much as digits as its factorization.

112640142561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37546714190.

The product of its (nonzero) digits is 11520, while the sum is 33.

Adding to 112640142561 its reverse (165241046211), we get a palindrome (277881188772).

The spelling of 112640142561 in words is "one hundred twelve billion, six hundred forty million, one hundred forty-two thousand, five hundred sixty-one".