133318073617 has 4 divisors (see below), whose sum is σ = 133384768000. Its totient is φ = 133251379236.

The previous prime is 133318073611. The next prime is 133318073621. The reversal of 133318073617 is 716370813331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133318073617 - 2¹⁹ = 133317549329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133318073611) 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, 33344193 + ... + 33348190.

It is an arithmetic number, because the mean of its divisors is an integer number (33346192000).

Almost surely, 2^133318073617 is an apocalyptic number.

It is an amenable number.

133318073617 is a deficient number, since it is larger than the sum of its proper divisors (66694383).

133318073617 is an equidigital number, since it uses as much as digits as its factorization.

133318073617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66694382.

The product of its (nonzero) digits is 190512, while the sum is 43.

Adding to 133318073617 its reverse (716370813331), we get a palindrome (849688886948).

The spelling of 133318073617 in words is "one hundred thirty-three billion, three hundred eighteen million, seventy-three thousand, six hundred seventeen".