133061663812 has 72 divisors (see below), whose sum is σ = 293194512128. Its totient is φ = 51721908480.

The previous prime is 133061663809. The next prime is 133061663821. The reversal of 133061663812 is 218366160331.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1421653 + ... + 1512355.

Almost surely, 2^133061663812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133061663812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146597256064).

133061663812 is an abundant number, since it is smaller than the sum of its proper divisors (160132848316).

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

133061663812 is a wasteful number, since it uses less digits than its factorization.

133061663812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91169 (or 91156 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The spelling of 133061663812 in words is "one hundred thirty-three billion, sixty-one million, six hundred sixty-three thousand, eight hundred twelve".