133535745617 has 4 divisors (see below), whose sum is σ = 133536503220. Its totient is φ = 133534988016.

The previous prime is 133535745593. The next prime is 133535745631. The reversal of 133535745617 is 716547535331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4033647121 + 129502098496 = 63511^2 + 359864^2 .

It is a cyclic number.

It is not a de Polignac number, because 133535745617 - 2¹⁰ = 133535744593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133535742617) 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, 39743 + ... + 518315.

It is an arithmetic number, because the mean of its divisors is an integer number (33384125805).

Almost surely, 2^133535745617 is an apocalyptic number.

It is an amenable number.

133535745617 is a deficient number, since it is larger than the sum of its proper divisors (757603).

133535745617 is an equidigital number, since it uses as much as digits as its factorization.

133535745617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757602.

The product of its digits is 3969000, while the sum is 50.

The spelling of 133535745617 in words is "one hundred thirty-three billion, five hundred thirty-five million, seven hundred forty-five thousand, six hundred seventeen".