131778345780608 has 32 divisors (see below), whose sum is σ = 262955439579360. Its totient is φ = 65781686435328.

The previous prime is 131778345780461. The next prime is 131778345780617. The reversal of 131778345780608 is 806087543877131.

It is a tau number, because it is divible by the number of its divisors (32).

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 3 ways as a sum of consecutive naturals, for example, 839659160 + ... + 839816087.

It is an arithmetic number, because the mean of its divisors is an integer number (8217357486855).

Almost surely, 2^{131778345780608} is an apocalyptic number.

It is an amenable number.

131778345780608 is a deficient number, since it is larger than the sum of its proper divisors (131177093798752).

131778345780608 is an equidigital number, since it uses as much as digits as its factorization.

131778345780608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679475874 (or 1679475862 counting only the distinct ones).

The product of its (nonzero) digits is 189665280, while the sum is 68.

The spelling of 131778345780608 in words is "one hundred thirty-one trillion, seven hundred seventy-eight billion, three hundred forty-five million, seven hundred eighty thousand, six hundred eight".