115638671382 has 64 divisors (see below), whose sum is σ = 257184958464. Its totient is φ = 34422289920.

The previous prime is 115638671381. The next prime is 115638671387. The reversal of 115638671382 is 283176836511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115638671381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10481353 + ... + 10492379.

It is an arithmetic number, because the mean of its divisors is an integer number (4018514976).

Almost surely, 2^115638671382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115638671382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128592479232).

115638671382 is an abundant number, since it is smaller than the sum of its proper divisors (141546287082).

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

115638671382 is a wasteful number, since it uses less digits than its factorization.

115638671382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15413.

The product of its digits is 1451520, while the sum is 51.

The spelling of 115638671382 in words is "one hundred fifteen billion, six hundred thirty-eight million, six hundred seventy-one thousand, three hundred eighty-two".