112478123557 has 4 divisors (see below), whose sum is σ = 113099549836. Its totient is φ = 111856697280.

The previous prime is 112478123497. The next prime is 112478123599. The reversal of 112478123557 is 755321874211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17879433796 + 94598689761 = 133714^2 + 307569^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112478123557 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 (112478123657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310712868 + ... + 310713229.

It is an arithmetic number, because the mean of its divisors is an integer number (28274887459).

Almost surely, 2^112478123557 is an apocalyptic number.

It is an amenable number.

112478123557 is a deficient number, since it is larger than the sum of its proper divisors (621426279).

112478123557 is an equidigital number, since it uses as much as digits as its factorization.

112478123557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621426278.

The product of its digits is 470400, while the sum is 46.

Adding to 112478123557 its reverse (755321874211), we get a palindrome (867799997768).

The spelling of 112478123557 in words is "one hundred twelve billion, four hundred seventy-eight million, one hundred twenty-three thousand, five hundred fifty-seven".