111563553073 has 4 divisors (see below), whose sum is σ = 127501203520. Its totient is φ = 95625902628.

The previous prime is 111563553071. The next prime is 111563553077. The reversal of 111563553073 is 370355365111.

It is a happy number.

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 111563553073 - 2¹ = 111563553071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111563553071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7968825213 + ... + 7968825226.

It is an arithmetic number, because the mean of its divisors is an integer number (31875300880).

Almost surely, 2^111563553073 is an apocalyptic number.

It is an amenable number.

111563553073 is a deficient number, since it is larger than the sum of its proper divisors (15937650447).

111563553073 is an equidigital number, since it uses as much as digits as its factorization.

111563553073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15937650446.

The product of its (nonzero) digits is 141750, while the sum is 40.

The spelling of 111563553073 in words is "one hundred eleven billion, five hundred sixty-three million, five hundred fifty-three thousand, seventy-three".