111554102023 has 24 divisors (see below), whose sum is σ = 140451511200. Its totient is φ = 87818955840.

The previous prime is 111554102021. The next prime is 111554102029. The reversal of 111554102023 is 320201455111.

It is not a de Polignac number, because 111554102023 - 2¹ = 111554102021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111554102021) 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 23 ways as a sum of consecutive naturals, for example, 313248 + ... + 566773.

It is an arithmetic number, because the mean of its divisors is an integer number (5852146300).

Almost surely, 2^111554102023 is an apocalyptic number.

111554102023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

111554102023 is a deficient number, since it is larger than the sum of its proper divisors (28897409177).

111554102023 is a wasteful number, since it uses less digits than its factorization.

111554102023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880247 (or 880240 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 111554102023 its reverse (320201455111), we get a palindrome (431755557134).

The spelling of 111554102023 in words is "one hundred eleven billion, five hundred fifty-four million, one hundred two thousand, twenty-three".