20168897341 has 4 divisors (see below), whose sum is σ = 20169232732. Its totient is φ = 20168561952.

The previous prime is 20168897327. The next prime is 20168897381. The reversal of 20168897341 is 14379886102.

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 14120568900 + 6048328441 = 118830^2 + 77771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20168897341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20168897381) 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, 49920 + ... + 206953.

It is an arithmetic number, because the mean of its divisors is an integer number (5042308183).

Almost surely, 2^20168897341 is an apocalyptic number.

It is an amenable number.

20168897341 is a deficient number, since it is larger than the sum of its proper divisors (335391).

20168897341 is an equidigital number, since it uses as much as digits as its factorization.

20168897341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335390.

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 20168897341 in words is "twenty billion, one hundred sixty-eight million, eight hundred ninety-seven thousand, three hundred forty-one".