133423355544 has 32 divisors (see below), whose sum is σ = 341693961840. Its totient is φ = 43389708800.

The previous prime is 133423355497. The next prime is 133423355579. The reversal of 133423355544 is 445553324331.

It is a junction number, because it is equal to n+sod(n) for n = 133423355496 and 133423355505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67795437 + ... + 67797404.

Almost surely, 2^133423355544 is an apocalyptic number.

It is an amenable number.

133423355544 is an abundant number, since it is smaller than the sum of its proper divisors (208270606296).

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

133423355544 is a wasteful number, since it uses less digits than its factorization.

133423355544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135592891 (or 135592887 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 42.

Adding to 133423355544 its reverse (445553324331), we get a palindrome (578976679875).

The spelling of 133423355544 in words is "one hundred thirty-three billion, four hundred twenty-three million, three hundred fifty-five thousand, five hundred forty-four".