111355444503 has 12 divisors (see below), whose sum is σ = 166035358528. Its totient is φ = 71842222080.

The previous prime is 111355444489. The next prime is 111355444507. The reversal of 111355444503 is 305444553111.

111355444503 is a `hidden beast` number, since 1 + 1 + 13 + 554 + 44 + 50 + 3 = 666.

It is not a de Polignac number, because 111355444503 - 2²⁰ = 111354395927 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 (111355444507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199561450 + ... + 199562007.

Almost surely, 2^111355444503 is an apocalyptic number.

111355444503 is a deficient number, since it is larger than the sum of its proper divisors (54679914025).

111355444503 is a wasteful number, since it uses less digits than its factorization.

111355444503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399123494 (or 399123491 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 111355444503 its reverse (305444553111), we get a palindrome (416799997614).

The spelling of 111355444503 in words is "one hundred eleven billion, three hundred fifty-five million, four hundred forty-four thousand, five hundred three".