136405487968 has 24 divisors (see below), whose sum is σ = 271316849832. Its totient is φ = 67499621376.

The previous prime is 136405487963. The next prime is 136405487969. The reversal of 136405487968 is 869784504631.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136405487963) 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 3 ways as a sum of consecutive naturals, for example, 21969430 + ... + 21975637.

It is an arithmetic number, because the mean of its divisors is an integer number (11304868743).

Almost surely, 2^136405487968 is an apocalyptic number.

It is an amenable number.

136405487968 is a deficient number, since it is larger than the sum of its proper divisors (134911361864).

136405487968 is an equidigital number, since it uses as much as digits as its factorization.

136405487968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43945174 (or 43945166 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 61.

The spelling of 136405487968 in words is "one hundred thirty-six billion, four hundred five million, four hundred eighty-seven thousand, nine hundred sixty-eight".