20540053445 has 8 divisors (see below), whose sum is σ = 25497997560. Its totient is φ = 15865420480.

The previous prime is 20540053421. The next prime is 20540053447. The reversal of 20540053445 is 54435004502.

It can be written as a sum of positive squares in 4 ways, for example, as 7590068641 + 12949984804 = 87121^2 + 113798^2 .

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

It is not a de Polignac number, because 20540053445 - 2¹⁸ = 20539791301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20540053447) 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, 70827626 + ... + 70827915.

It is an arithmetic number, because the mean of its divisors is an integer number (3187249695).

Almost surely, 2^20540053445 is an apocalyptic number.

It is an amenable number.

20540053445 is a deficient number, since it is larger than the sum of its proper divisors (4957944115).

20540053445 is a wasteful number, since it uses less digits than its factorization.

20540053445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141655575.

The product of its (nonzero) digits is 48000, while the sum is 32.

Adding to 20540053445 its reverse (54435004502), we get a palindrome (74975057947).

The spelling of 20540053445 in words is "twenty billion, five hundred forty million, fifty-three thousand, four hundred forty-five".