133557455684 has 12 divisors (see below), whose sum is σ = 233728490604. Its totient is φ = 66777886944.

The previous prime is 133557455683. The next prime is 133557455693. The reversal of 133557455684 is 486554755331.

It can be written as a sum of positive squares in 2 ways, for example, as 132284964100 + 1272491584 = 363710^2 + 35672^2 .

It is not an unprimeable number, because it can be changed into a prime (133557455683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268022 + ... + 582194.

It is an arithmetic number, because the mean of its divisors is an integer number (19477374217).

Almost surely, 2^133557455684 is an apocalyptic number.

It is an amenable number.

133557455684 is a deficient number, since it is larger than the sum of its proper divisors (100171034920).

133557455684 is a wasteful number, since it uses less digits than its factorization.

133557455684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420454 (or 420452 counting only the distinct ones).

The product of its digits is 30240000, while the sum is 56.

The spelling of 133557455684 in words is "one hundred thirty-three billion, five hundred fifty-seven million, four hundred fifty-five thousand, six hundred eighty-four".