111381438135 has 32 divisors (see below), whose sum is σ = 194658492672. Its totient is φ = 53934439680.

The previous prime is 111381438101. The next prime is 111381438149. The reversal of 111381438135 is 531834183111.

It is not a de Polignac number, because 111381438135 - 2³⁶ = 42661961399 is a prime.

It is a super-2 number, since 2×111381438135² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111381438093 and 111381438102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299014 + ... + 558723.

It is an arithmetic number, because the mean of its divisors is an integer number (6083077896).

Almost surely, 2^111381438135 is an apocalyptic number.

111381438135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

111381438135 is a deficient number, since it is larger than the sum of its proper divisors (83277054537).

111381438135 is a wasteful number, since it uses less digits than its factorization.

111381438135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858543.

The product of its digits is 34560, while the sum is 39.

The spelling of 111381438135 in words is "one hundred eleven billion, three hundred eighty-one million, four hundred thirty-eight thousand, one hundred thirty-five".