133917283894 has 4 divisors (see below), whose sum is σ = 200875925844. Its totient is φ = 66958641946.

The previous prime is 133917283867. The next prime is 133917283937. The reversal of 133917283894 is 498382719331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 498382719331 = 7 ⋅71197531333.

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, 33479320972 + ... + 33479320975.

It is an arithmetic number, because the mean of its divisors is an integer number (50218981461).

Almost surely, 2^133917283894 is an apocalyptic number.

133917283894 is a deficient number, since it is larger than the sum of its proper divisors (66958641950).

133917283894 is an equidigital number, since it uses as much as digits as its factorization.

133917283894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66958641949.

The product of its digits is 7838208, while the sum is 58.

The spelling of 133917283894 in words is "one hundred thirty-three billion, nine hundred seventeen million, two hundred eighty-three thousand, eight hundred ninety-four".