133543817428 has 12 divisors (see below), whose sum is σ = 267087634912. Its totient is φ = 57233064600.

The previous prime is 133543817401. The next prime is 133543817437. The reversal of 133543817428 is 824718345331.

133543817428 is an admirable number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2384710998 + ... + 2384711053.

Almost surely, 2^133543817428 is an apocalyptic number.

It is an amenable number.

133543817428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

133543817428 is a wasteful number, since it uses less digits than its factorization.

133543817428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4769422062 (or 4769422060 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 49.

The spelling of 133543817428 in words is "one hundred thirty-three billion, five hundred forty-three million, eight hundred seventeen thousand, four hundred twenty-eight".