133781548728 has 64 divisors (see below), whose sum is σ = 338075892000. Its totient is φ = 44111388672.

The previous prime is 133781548673. The next prime is 133781548753. The reversal of 133781548728 is 827845187331.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4849438 + ... + 4876946.

Almost surely, 2^133781548728 is an apocalyptic number.

It is an amenable number.

133781548728 is an abundant number, since it is smaller than the sum of its proper divisors (204294343272).

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

133781548728 is a wasteful number, since it uses less digits than its factorization.

133781548728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29704 (or 29700 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 57.

The spelling of 133781548728 in words is "one hundred thirty-three billion, seven hundred eighty-one million, five hundred forty-eight thousand, seven hundred twenty-eight".