133550840061 has 12 divisors (see below), whose sum is σ = 193535133792. Its totient is φ = 88743878856.

The previous prime is 133550840057. The next prime is 133550840069. The reversal of 133550840061 is 160048055331.

133550840061 is a `hidden beast` number, since 1 + 3 + 3 + 550 + 8 + 40 + 0 + 61 = 666.

It is not a de Polignac number, because 133550840061 - 2² = 133550840057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133550839998 and 133550840025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133550840069) 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, 24164961 + ... + 24170486.

It is an arithmetic number, because the mean of its divisors is an integer number (16127927816).

Almost surely, 2^133550840061 is an apocalyptic number.

It is an amenable number.

133550840061 is a deficient number, since it is larger than the sum of its proper divisors (59984293731).

133550840061 is a wasteful number, since it uses less digits than its factorization.

133550840061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48335760 (or 48335757 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 133550840061 its reverse (160048055331), we get a palindrome (293598895392).

The spelling of 133550840061 in words is "one hundred thirty-three billion, five hundred fifty million, eight hundred forty thousand, sixty-one".