20617434431716 has 6 divisors (see below), whose sum is σ = 36080510255510. Its totient is φ = 10308717215856.

The previous prime is 20617434431609. The next prime is 20617434431719. The reversal of 20617434431716 is 61713443471602.

It can be written as a sum of positive squares in only one way, i.e., 20597564710116 + 19869721600 = 4538454^2 + 140960^2 .

It is a super-2 number, since 2×20617434431716² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20617434431716.

It is not an unprimeable number, because it can be changed into a prime (20617434431719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2577179303961 + ... + 2577179303968.

Almost surely, 2^{20617434431716} is an apocalyptic number.

It is an amenable number.

20617434431716 is a deficient number, since it is larger than the sum of its proper divisors (15463075823794).

20617434431716 is a wasteful number, since it uses less digits than its factorization.

20617434431716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5154358607933 (or 5154358607931 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 49.

The spelling of 20617434431716 in words is "twenty trillion, six hundred seventeen billion, four hundred thirty-four million, four hundred thirty-one thousand, seven hundred sixteen".