115667787986 has 8 divisors (see below), whose sum is σ = 173504009100. Its totient is φ = 57833118288.

The previous prime is 115667787943. The next prime is 115667788007. The reversal of 115667787986 is 689787766511.

It can be written as a sum of positive squares in 2 ways, for example, as 68111082361 + 47556705625 = 260981^2 + 218075^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 178961 + ... + 513188.

Almost surely, 2^115667787986 is an apocalyptic number.

115667787986 is a deficient number, since it is larger than the sum of its proper divisors (57836221114).

115667787986 is an equidigital number, since it uses as much as digits as its factorization.

115667787986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775708.

The product of its digits is 213373440, while the sum is 71.

The spelling of 115667787986 in words is "one hundred fifteen billion, six hundred sixty-seven million, seven hundred eighty-seven thousand, nine hundred eighty-six".