115553432240 has 160 divisors (see below), whose sum is σ = 287450601984. Its totient is φ = 43048448000.

The previous prime is 115553432237. The next prime is 115553432243. The reversal of 115553432240 is 42234355511.

It is an interprime number because it is at equal distance from previous prime (115553432237) and next prime (115553432243).

It is a self number, because there is not a number n which added to its sum of digits gives 115553432240.

It is not an unprimeable number, because it can be changed into a prime (115553432243) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 57006107 + ... + 57008133.

Almost surely, 2^115553432240 is an apocalyptic number.

115553432240 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 115553432240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143725300992).

115553432240 is an abundant number, since it is smaller than the sum of its proper divisors (171897169744).

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

115553432240 is a wasteful number, since it uses less digits than its factorization.

115553432240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2475 (or 2469 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 115553432240 its reverse (42234355511), we get a palindrome (157787787751).

The spelling of 115553432240 in words is "one hundred fifteen billion, five hundred fifty-three million, four hundred thirty-two thousand, two hundred forty".