133979989490768 has 20 divisors (see below), whose sum is σ = 259586419159188. Its totient is φ = 66989945836800.

The previous prime is 133979989490759. The next prime is 133979989490771. The reversal of 133979989490768 is 867094989979331.

It can be written as a sum of positive squares in 2 ways, for example, as 64408842862144 + 69571146628624 = 8025512^2 + 8340932^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31127930 + ... + 35169702.

Almost surely, 2^{133979989490768} is an apocalyptic number.

It is an amenable number.

133979989490768 is a deficient number, since it is larger than the sum of its proper divisors (125606429668420).

133979989490768 is a wasteful number, since it uses less digits than its factorization.

133979989490768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6113582 (or 6113576 counting only the distinct ones).

The product of its (nonzero) digits is 39998375424, while the sum is 92.

The spelling of 133979989490768 in words is "one hundred thirty-three trillion, nine hundred seventy-nine billion, nine hundred eighty-nine million, four hundred ninety thousand, seven hundred sixty-eight".