133404019394 has 4 divisors (see below), whose sum is σ = 200106029094. Its totient is φ = 66702009696.

The previous prime is 133404019373. The next prime is 133404019417. The reversal of 133404019394 is 493910404331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 493910404331 = 18797 ⋅26276023.

It can be written as a sum of positive squares in only one way, i.e., 108891420169 + 24512599225 = 329987^2 + 156565^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33351004847 + ... + 33351004850.

Almost surely, 2^133404019394 is an apocalyptic number.

133404019394 is a deficient number, since it is larger than the sum of its proper divisors (66702009700).

133404019394 is an equidigital number, since it uses as much as digits as its factorization.

133404019394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66702009699.

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 133404019394 in words is "one hundred thirty-three billion, four hundred four million, nineteen thousand, three hundred ninety-four".