115387659648 has 128 divisors (see below), whose sum is σ = 344759061600. Its totient is φ = 38462459904.

The previous prime is 115387659643. The next prime is 115387659649. The reversal of 115387659648 is 846956783511.

115387659648 is a `hidden beast` number, since 1 + 1 + 5 + 38 + 7 + 6 + 596 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115387659643) 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, 73840 + ... + 486032.

Almost surely, 2^115387659648 is an apocalyptic number.

115387659648 is a gapful number since it is divisible by the number (18) 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 115387659648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172379530800).

115387659648 is an abundant number, since it is smaller than the sum of its proper divisors (229371401952).

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

115387659648 is an frugal number, since it uses more digits than its factorization.

115387659648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412228 (or 412198 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 63.

The spelling of 115387659648 in words is "one hundred fifteen billion, three hundred eighty-seven million, six hundred fifty-nine thousand, six hundred forty-eight".