133686435136 has 14 divisors (see below), whose sum is σ = 265284019850. Its totient is φ = 66843217536.

The previous prime is 133686435131. The next prime is 133686435137. The reversal of 133686435136 is 631534686331.

It can be written as a sum of positive squares in only one way, i.e., 70785795136 + 62900640000 = 266056^2 + 250800^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 133686435136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133686435131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1044425211 + ... + 1044425338.

Almost surely, 2^133686435136 is an apocalyptic number.

133686435136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133686435136 is a deficient number, since it is larger than the sum of its proper divisors (131597584714).

133686435136 is an equidigital number, since it uses as much as digits as its factorization.

133686435136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088850561 (or 2088850551 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 49.

The spelling of 133686435136 in words is "one hundred thirty-three billion, six hundred eighty-six million, four hundred thirty-five thousand, one hundred thirty-six".