115718282640 has 320 divisors, whose sum is σ = 424772812800. Its totient is φ = 28887952896.

The previous prime is 115718282629. The next prime is 115718282681. The reversal of 115718282640 is 46282817511.

115718282640 is a `hidden beast` number, since 11 + 571 + 8 + 2 + 8 + 2 + 64 + 0 = 666.

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

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 63 ways as a sum of consecutive naturals, for example, 2310181 + ... + 2359739.

It is an arithmetic number, because the mean of its divisors is an integer number (1327415040).

Almost surely, 2^115718282640 is an apocalyptic number.

115718282640 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 115718282640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212386406400).

115718282640 is an abundant number, since it is smaller than the sum of its proper divisors (309054530160).

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

115718282640 is a wasteful number, since it uses less digits than its factorization.

115718282640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49651 (or 49639 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 115718282640 in words is "one hundred fifteen billion, seven hundred eighteen million, two hundred eighty-two thousand, six hundred forty".