133561602012 has 24 divisors (see below), whose sum is σ = 311759280000. Its totient is φ = 44504028016.

The previous prime is 133561601977. The next prime is 133561602017. The reversal of 133561602012 is 210206165331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133561602017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2029512 + ... + 2094287.

It is an arithmetic number, because the mean of its divisors is an integer number (12989970000).

Almost surely, 2^133561602012 is an apocalyptic number.

133561602012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133561602012 is an abundant number, since it is smaller than the sum of its proper divisors (178197677988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133561602012 is a wasteful number, since it uses less digits than its factorization.

133561602012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4126505 (or 4126503 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 133561602012 its reverse (210206165331), we get a palindrome (343767767343).

The spelling of 133561602012 in words is "one hundred thirty-three billion, five hundred sixty-one million, six hundred two thousand, twelve".