133339758491 has 4 divisors (see below), whose sum is σ = 133429672152. Its totient is φ = 133249844832.

The previous prime is 133339758479. The next prime is 133339758499. The reversal of 133339758491 is 194857933331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194857933331 = 68879 ⋅2828989.

It is a cyclic number.

It is not a de Polignac number, because 133339758491 - 2³⁰ = 132266016667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133339758499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44954606 + ... + 44957571.

It is an arithmetic number, because the mean of its divisors is an integer number (33357418038).

Almost surely, 2^133339758491 is an apocalyptic number.

133339758491 is a deficient number, since it is larger than the sum of its proper divisors (89913661).

133339758491 is an equidigital number, since it uses as much as digits as its factorization.

133339758491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89913660.

The product of its digits is 7348320, while the sum is 56.

The spelling of 133339758491 in words is "one hundred thirty-three billion, three hundred thirty-nine million, seven hundred fifty-eight thousand, four hundred ninety-one".