20545340341 has 8 divisors (see below), whose sum is σ = 21444272640. Its totient is φ = 19646879472.

The previous prime is 20545340297. The next prime is 20545340351. The reversal of 20545340341 is 14304354502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20545340341 is a prime.

It is a super-2 number, since 2×20545340341² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20545340351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27301 + ... + 204538.

It is an arithmetic number, because the mean of its divisors is an integer number (2680534080).

Almost surely, 2^20545340341 is an apocalyptic number.

It is an amenable number.

20545340341 is a deficient number, since it is larger than the sum of its proper divisors (898932299).

20545340341 is a wasteful number, since it uses less digits than its factorization.

20545340341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235715.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 20545340341 its reverse (14304354502), we get a palindrome (34849694843).

The spelling of 20545340341 in words is "twenty billion, five hundred forty-five million, three hundred forty thousand, three hundred forty-one".