641271541733 has 4 divisors (see below), whose sum is σ = 641292338508. Its totient is φ = 641250744960.

The previous prime is 641271541723. The next prime is 641271541759. The reversal of 641271541733 is 337145172146.

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 552633152449 + 88638389284 = 743393^2 + 297722^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641271541733 is a prime.

It is a super-2 number, since 2×641271541733² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641271541723) 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, 10352066 + ... + 10413827.

It is an arithmetic number, because the mean of its divisors is an integer number (160323084627).

Almost surely, 2^641271541733 is an apocalyptic number.

It is an amenable number.

641271541733 is a deficient number, since it is larger than the sum of its proper divisors (20796775).

641271541733 is a wasteful number, since it uses less digits than its factorization.

641271541733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20796774.

The product of its digits is 423360, while the sum is 44.

The spelling of 641271541733 in words is "six hundred forty-one billion, two hundred seventy-one million, five hundred forty-one thousand, seven hundred thirty-three".