111431554553 has 8 divisors (see below), whose sum is σ = 123100452480. Its totient is φ = 100019116080.

The previous prime is 111431554541. The next prime is 111431554567. The reversal of 111431554553 is 355455134111.

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

It is a cyclic number.

It is not a de Polignac number, because 111431554553 - 2⁶ = 111431554489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111431554753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64113950 + ... + 64115687.

It is an arithmetic number, because the mean of its divisors is an integer number (15387556560).

Almost surely, 2^111431554553 is an apocalyptic number.

It is an amenable number.

111431554553 is a deficient number, since it is larger than the sum of its proper divisors (11668897927).

111431554553 is a wasteful number, since it uses less digits than its factorization.

111431554553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128229727.

The product of its digits is 90000, while the sum is 38.

Adding to 111431554553 its reverse (355455134111), we get a palindrome (466886688664).

The spelling of 111431554553 in words is "one hundred eleven billion, four hundred thirty-one million, five hundred fifty-four thousand, five hundred fifty-three".