111973725447 has 8 divisors (see below), whose sum is σ = 150776502000. Its totient is φ = 73910049600.

The previous prime is 111973725443. The next prime is 111973725467. The reversal of 111973725447 is 744527379111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111973725447 - 2² = 111973725443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111973725447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111973725443) 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 7 ways as a sum of consecutive naturals, for example, 184774822 + ... + 184775427.

It is an arithmetic number, because the mean of its divisors is an integer number (18847062750).

Almost surely, 2^111973725447 is an apocalyptic number.

111973725447 is a deficient number, since it is larger than the sum of its proper divisors (38802776553).

111973725447 is a wasteful number, since it uses less digits than its factorization.

111973725447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369550353.

The product of its digits is 1481760, while the sum is 51.

The spelling of 111973725447 in words is "one hundred eleven billion, nine hundred seventy-three million, seven hundred twenty-five thousand, four hundred forty-seven".