133685896005 has 12 divisors (see below), whose sum is σ = 231722219820. Its totient is φ = 71299144512.

The previous prime is 133685895983. The next prime is 133685896009. The reversal of 133685896005 is 500698586331.

It can be written as a sum of positive squares in 2 ways, for example, as 17923318884 + 115762577121 = 133878^2 + 340239^2 .

It is not a de Polignac number, because 133685896005 - 2²² = 133681701701 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133685896009) 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 11 ways as a sum of consecutive naturals, for example, 1485398800 + ... + 1485398889.

It is an arithmetic number, because the mean of its divisors is an integer number (19310184985).

Almost surely, 2^133685896005 is an apocalyptic number.

133685896005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133685896005 is a deficient number, since it is larger than the sum of its proper divisors (98036323815).

133685896005 is a wasteful number, since it uses less digits than its factorization.

133685896005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2970797700 (or 2970797697 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 133685896005 in words is "one hundred thirty-three billion, six hundred eighty-five million, eight hundred ninety-six thousand, five".