641416171453 has 2 divisors, whose sum is σ = 641416171454. Its totient is φ = 641416171452.

The previous prime is 641416171439. The next prime is 641416171477. The reversal of 641416171453 is 354171614146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 568579337764 + 72836833689 = 754042^2 + 269883^2 .

It is a cyclic number.

It is not a de Polignac number, because 641416171453 - 2¹³ = 641416163261 is a prime.

It is a super-2 number, since 2×641416171453² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641416171423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320708085726 + 320708085727.

It is an arithmetic number, because the mean of its divisors is an integer number (320708085727).

Almost surely, 2^641416171453 is an apocalyptic number.

It is an amenable number.

641416171453 is a deficient number, since it is larger than the sum of its proper divisors (1).

641416171453 is an equidigital number, since it uses as much as digits as its factorization.

641416171453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

Adding to 641416171453 its reverse (354171614146), we get a palindrome (995587785599).

The spelling of 641416171453 in words is "six hundred forty-one billion, four hundred sixteen million, one hundred seventy-one thousand, four hundred fifty-three".