115648100280 has 384 divisors, whose sum is σ = 409593600000. Its totient is φ = 28191421440.

The previous prime is 115648100263. The next prime is 115648100339. The reversal of 115648100280 is 82001846511.

115648100280 is a `hidden beast` number, since 1 + 1 + 5 + 648 + 1 + 0 + 0 + 2 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 105807414 + ... + 105808506.

It is an arithmetic number, because the mean of its divisors is an integer number (1066650000).

Almost surely, 2^115648100280 is an apocalyptic number.

115648100280 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 115648100280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204796800000).

115648100280 is an abundant number, since it is smaller than the sum of its proper divisors (293945499720).

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

115648100280 is a wasteful number, since it uses less digits than its factorization.

115648100280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659 (or 1652 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

Adding to 115648100280 its reverse (82001846511), we get a palindrome (197649946791).

The spelling of 115648100280 in words is "one hundred fifteen billion, six hundred forty-eight million, one hundred thousand, two hundred eighty".