133554428438 has 4 divisors (see below), whose sum is σ = 200331642660. Its totient is φ = 66777214218.

The previous prime is 133554428389. The next prime is 133554428443. The reversal of 133554428438 is 834824455331.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33388607108 + ... + 33388607111.

It is an arithmetic number, because the mean of its divisors is an integer number (50082910665).

Almost surely, 2^133554428438 is an apocalyptic number.

133554428438 is a deficient number, since it is larger than the sum of its proper divisors (66777214222).

133554428438 is an equidigital number, since it uses as much as digits as its factorization.

133554428438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66777214221.

The product of its digits is 5529600, while the sum is 50.

The spelling of 133554428438 in words is "one hundred thirty-three billion, five hundred fifty-four million, four hundred twenty-eight thousand, four hundred thirty-eight".