133774581636 has 36 divisors (see below), whose sum is σ = 339035354112. Its totient is φ = 44475095664.

The previous prime is 133774581623. The next prime is 133774581641. The reversal of 133774581636 is 636185477331.

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

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, 4837336 + ... + 4864911.

Almost surely, 2^133774581636 is an apocalyptic number.

It is an amenable number.

133774581636 is an abundant number, since it is smaller than the sum of its proper divisors (205260772476).

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

133774581636 is a wasteful number, since it uses less digits than its factorization.

133774581636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9702640 (or 9702635 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 54.

The spelling of 133774581636 in words is "one hundred thirty-three billion, seven hundred seventy-four million, five hundred eighty-one thousand, six hundred thirty-six".