115681526487 has 16 divisors (see below), whose sum is σ = 174189550560. Its totient is φ = 75856737600.

The previous prime is 115681526419. The next prime is 115681526503. The reversal of 115681526487 is 784625186511.

115681526487 is a `hidden beast` number, since 1 + 1 + 5 + 6 + 8 + 152 + 6 + 487 = 666.

It is not a de Polignac number, because 115681526487 - 2¹⁴ = 115681510103 is a prime.

It is a super-2 number, since 2×115681526487² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115681526287) 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 15 ways as a sum of consecutive naturals, for example, 35117214 + ... + 35120507.

It is an arithmetic number, because the mean of its divisors is an integer number (10886846910).

Almost surely, 2^115681526487 is an apocalyptic number.

115681526487 is a deficient number, since it is larger than the sum of its proper divisors (58508024073).

115681526487 is an equidigital number, since it uses as much as digits as its factorization.

115681526487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70237791 (or 70237785 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

The spelling of 115681526487 in words is "one hundred fifteen billion, six hundred eighty-one million, five hundred twenty-six thousand, four hundred eighty-seven".