20127732574445 has 8 divisors (see below), whose sum is σ = 25574060212344. Its totient is φ = 15154998644224.

The previous prime is 20127732574441. The next prime is 20127732574487. The reversal of 20127732574445 is 54447523772102.

It can be written as a sum of positive squares in 4 ways, for example, as 2845769937481 + 17281962636964 = 1686941^2 + 4157158^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20127732574445 - 2² = 20127732574441 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 (20127732574441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118398426824 + ... + 118398426993.

It is an arithmetic number, because the mean of its divisors is an integer number (3196757526543).

Almost surely, 2^{20127732574445} is an apocalyptic number.

It is an amenable number.

20127732574445 is a deficient number, since it is larger than the sum of its proper divisors (5446327637899).

20127732574445 is a wasteful number, since it uses less digits than its factorization.

20127732574445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236796853839.

The product of its (nonzero) digits is 13171200, while the sum is 53.

The spelling of 20127732574445 in words is "twenty trillion, one hundred twenty-seven billion, seven hundred thirty-two million, five hundred seventy-four thousand, four hundred forty-five".