115154443423440 has 240 divisors, whose sum is σ = 393105096199296. Its totient is φ = 30201500851200.

The previous prime is 115154443423417. The next prime is 115154443423541. The reversal of 115154443423440 is 44324344451511.

115154443423440 is a `hidden beast` number, since 1 + 1 + 5 + 1 + 544 + 4 + 34 + 2 + 34 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 470304727 + ... + 470549513.

Almost surely, 2^{115154443423440} is an apocalyptic number.

115154443423440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115154443423440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196552548099648).

115154443423440 is an abundant number, since it is smaller than the sum of its proper divisors (277950652775856).

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

115154443423440 is a wasteful number, since it uses less digits than its factorization.

115154443423440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255578 (or 255569 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 45.

Adding to 115154443423440 its reverse (44324344451511), we get a palindrome (159478787874951).

The spelling of 115154443423440 in words is "one hundred fifteen trillion, one hundred fifty-four billion, four hundred forty-three million, four hundred twenty-three thousand, four hundred forty".