111355401345 has 16 divisors (see below), whose sum is σ = 178176609792. Its totient is φ = 59386891520.

The previous prime is 111355401341. The next prime is 111355401349. The reversal of 111355401345 is 543104553111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111355401341) and next prime (111355401349).

It is not a de Polignac number, because 111355401345 - 2² = 111355401341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111355401341) 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 15 ways as a sum of consecutive naturals, for example, 207760 + ... + 515630.

It is an arithmetic number, because the mean of its divisors is an integer number (11136038112).

Almost surely, 2^111355401345 is an apocalyptic number.

111355401345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111355401345 is a deficient number, since it is larger than the sum of its proper divisors (66821208447).

111355401345 is a wasteful number, since it uses less digits than its factorization.

111355401345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331992.

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 111355401345 its reverse (543104553111), we get a palindrome (654459954456).

The spelling of 111355401345 in words is "one hundred eleven billion, three hundred fifty-five million, four hundred one thousand, three hundred forty-five".