75641334533 has 4 divisors (see below), whose sum is σ = 76310726988. Its totient is φ = 74971942080.

The previous prime is 75641334499. The next prime is 75641334589. The reversal of 75641334533 is 33543314657.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27470742049 + 48170592484 = 165743^2 + 219478^2 .

It is a cyclic number.

It is not a de Polignac number, because 75641334533 - 2²⁰ = 75640285957 is a prime.

It is a super-3 number, since 3×75641334533³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75641337533) 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, 334696058 + ... + 334696283.

It is an arithmetic number, because the mean of its divisors is an integer number (19077681747).

Almost surely, 2^75641334533 is an apocalyptic number.

It is an amenable number.

75641334533 is a deficient number, since it is larger than the sum of its proper divisors (669392455).

75641334533 is a wasteful number, since it uses less digits than its factorization.

75641334533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669392454.

The product of its digits is 1360800, while the sum is 44.

The spelling of 75641334533 in words is "seventy-five billion, six hundred forty-one million, three hundred thirty-four thousand, five hundred thirty-three".