111437367138 has 32 divisors (see below), whose sum is σ = 247772891520. Its totient is φ = 37125644400.

The previous prime is 111437367133. The next prime is 111437367227. The reversal of 111437367138 is 831763734111.

111437367138 is a `hidden beast` number, since 11 + 143 + 7 + 367 + 138 = 666.

It is a super-2 number, since 2×111437367138² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 111437367093 and 111437367102.

It is not an unprimeable number, because it can be changed into a prime (111437367133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458913 + ... + 658388.

It is an arithmetic number, because the mean of its divisors is an integer number (7742902860).

Almost surely, 2^111437367138 is an apocalyptic number.

111437367138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

111437367138 is an abundant number, since it is smaller than the sum of its proper divisors (136335524382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111437367138 is a wasteful number, since it uses less digits than its factorization.

111437367138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119159 (or 1119153 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The spelling of 111437367138 in words is "one hundred eleven billion, four hundred thirty-seven million, three hundred sixty-seven thousand, one hundred thirty-eight".