112345777999 has 16 divisors (see below), whose sum is σ = 139540287040. Its totient is φ = 88073464320.

The previous prime is 112345777981. The next prime is 112345778071. The reversal of 112345777999 is 999777543211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 112345777999 - 2⁹ = 112345777487 is a prime.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 112345777999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112345777919) 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 15 ways as a sum of consecutive naturals, for example, 5653242 + ... + 5673079.

It is an arithmetic number, because the mean of its divisors is an integer number (8721267940).

Almost surely, 2^112345777999 is an apocalyptic number.

112345777999 is a deficient number, since it is larger than the sum of its proper divisors (27194509041).

112345777999 is a wasteful number, since it uses less digits than its factorization.

112345777999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11326450.

The product of its digits is 30005640, while the sum is 64.

The spelling of 112345777999 in words is "one hundred twelve billion, three hundred forty-five million, seven hundred seventy-seven thousand, nine hundred ninety-nine".