20740444552017 has 96 divisors (see below), whose sum is σ = 32775877056000. Its totient is φ = 12588201239040.

The previous prime is 20740444552013. The next prime is 20740444552021. The reversal of 20740444552017 is 71025544404702.

20740444552017 is a `hidden beast` number, since 2 + 0 + 7 + 40 + 4 + 44 + 552 + 0 + 17 = 666.

It is an interprime number because it is at equal distance from previous prime (20740444552013) and next prime (20740444552021).

It is not a de Polignac number, because 20740444552017 - 2² = 20740444552013 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20740444552013) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1436610123 + ... + 1436624559.

It is an arithmetic number, because the mean of its divisors is an integer number (341415386000).

Almost surely, 2^{20740444552017} is an apocalyptic number.

It is an amenable number.

20740444552017 is a deficient number, since it is larger than the sum of its proper divisors (12035432503983).

20740444552017 is a wasteful number, since it uses less digits than its factorization.

20740444552017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15831 (or 15828 counting only the distinct ones).

The product of its (nonzero) digits is 1254400, while the sum is 45.

Adding to 20740444552017 its reverse (71025544404702), we get a palindrome (91765988956719).

The spelling of 20740444552017 in words is "twenty trillion, seven hundred forty billion, four hundred forty-four million, five hundred fifty-two thousand, seventeen".