111345123465 has 48 divisors (see below), whose sum is σ = 206374471056. Its totient is φ = 55337472000.

The previous prime is 111345123443. The next prime is 111345123481. The reversal of 111345123465 is 564321543111.

111345123465 is a `hidden beast` number, since 1 + 1 + 134 + 512 + 3 + 4 + 6 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 25795893321 + 85549230144 = 160611^2 + 292488^2 .

It is not a de Polignac number, because 111345123465 - 2⁶ = 111345123401 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 643276 + ... + 797805.

It is an arithmetic number, because the mean of its divisors is an integer number (4299468147).

Almost surely, 2^111345123465 is an apocalyptic number.

111345123465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111345123465 is a deficient number, since it is larger than the sum of its proper divisors (95029347591).

111345123465 is a wasteful number, since it uses less digits than its factorization.

111345123465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441210 (or 1441207 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

Adding to 111345123465 its reverse (564321543111), we get a palindrome (675666666576).

The spelling of 111345123465 in words is "one hundred eleven billion, three hundred forty-five million, one hundred twenty-three thousand, four hundred sixty-five".