133473353481 has 24 divisors (see below), whose sum is σ = 207851309120. Its totient is φ = 82048005216.

The previous prime is 133473353471. The next prime is 133473353483. The reversal of 133473353481 is 184353374331.

133473353481 is a `hidden beast` number, since 1 + 3 + 3 + 4 + 7 + 33 + 534 + 81 = 666.

It is not a de Polignac number, because 133473353481 - 2¹⁰ = 133473352457 is a prime.

It is a super-2 number, since 2×133473353481² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133473353483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 513151 + ... + 728196.

Almost surely, 2^133473353481 is an apocalyptic number.

It is an amenable number.

133473353481 is a deficient number, since it is larger than the sum of its proper divisors (74377955639).

133473353481 is a wasteful number, since it uses less digits than its factorization.

133473353481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242285 (or 1242282 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 45.

The spelling of 133473353481 in words is "one hundred thirty-three billion, four hundred seventy-three million, three hundred fifty-three thousand, four hundred eighty-one".