111998194497 has 48 divisors (see below), whose sum is σ = 188107920000. Its totient is φ = 62884680192.

The previous prime is 111998194463. The next prime is 111998194499. The reversal of 111998194497 is 794491899111.

It is not a de Polignac number, because 111998194497 - 2¹⁰ = 111998193473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (111998194499) 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 47 ways as a sum of consecutive naturals, for example, 9691879 + ... + 9703427.

It is an arithmetic number, because the mean of its divisors is an integer number (3918915000).

Almost surely, 2^111998194497 is an apocalyptic number.

It is an amenable number.

111998194497 is a deficient number, since it is larger than the sum of its proper divisors (76109725503).

111998194497 is a wasteful number, since it uses less digits than its factorization.

111998194497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14230 (or 14227 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 63.

The spelling of 111998194497 in words is "one hundred eleven billion, nine hundred ninety-eight million, one hundred ninety-four thousand, four hundred ninety-seven".