133511071068 has 36 divisors (see below), whose sum is σ = 349985814360. Its totient is φ = 44503690032.

The previous prime is 133511071009. The next prime is 133511071097. The reversal of 133511071068 is 860170115331.

133511071068 is a `hidden beast` number, since 1 + 33 + 511 + 0 + 7 + 106 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68677563 + ... + 68679506.

Almost surely, 2^133511071068 is an apocalyptic number.

133511071068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

133511071068 is an abundant number, since it is smaller than the sum of its proper divisors (216474743292).

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

133511071068 is a wasteful number, since it uses less digits than its factorization.

133511071068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137357088 (or 137357074 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

Adding to 133511071068 its reverse (860170115331), we get a palindrome (993681186399).

The spelling of 133511071068 in words is "one hundred thirty-three billion, five hundred eleven million, seventy-one thousand, sixty-eight".