131778836608 has 16 divisors (see below), whose sum is σ = 262528151310. Its totient is φ = 65889418240.

The previous prime is 131778836597. The next prime is 131778836659. The reversal of 131778836608 is 806638877131.

It can be written as a sum of positive squares in only one way, i.e., 125197084224 + 6581752384 = 353832^2 + 81128^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 514760953 + ... + 514761208.

Almost surely, 2^131778836608 is an apocalyptic number.

It is an amenable number.

131778836608 is a deficient number, since it is larger than the sum of its proper divisors (130749314702).

131778836608 is an equidigital number, since it uses as much as digits as its factorization.

131778836608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029522175 (or 1029522163 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 58.

The spelling of 131778836608 in words is "one hundred thirty-one billion, seven hundred seventy-eight million, eight hundred thirty-six thousand, six hundred eight".