111405343555 has 32 divisors (see below), whose sum is σ = 146519746560. Its totient is φ = 80645070720.

The previous prime is 111405343523. The next prime is 111405343579. The reversal of 111405343555 is 555343504111.

It is not a de Polignac number, because 111405343555 - 2⁵ = 111405343523 is a prime.

It is a super-2 number, since 2×111405343555² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 12531322 + ... + 12540208.

It is an arithmetic number, because the mean of its divisors is an integer number (4578742080).

Almost surely, 2^111405343555 is an apocalyptic number.

111405343555 is a deficient number, since it is larger than the sum of its proper divisors (35114403005).

111405343555 is a wasteful number, since it uses less digits than its factorization.

111405343555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9939.

The product of its (nonzero) digits is 90000, while the sum is 37.

Adding to 111405343555 its reverse (555343504111), we get a palindrome (666748847666).

The spelling of 111405343555 in words is "one hundred eleven billion, four hundred five million, three hundred forty-three thousand, five hundred fifty-five".