20611304340568 has 8 divisors (see below), whose sum is σ = 38646195638580. Its totient is φ = 10305652170280.

The previous prime is 20611304340553. The next prime is 20611304340629. The reversal of 20611304340568 is 86504340311602.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1288206521278 + ... + 1288206521293.

Almost surely, 2^{20611304340568} is an apocalyptic number.

It is an amenable number.

20611304340568 is a deficient number, since it is larger than the sum of its proper divisors (18034891298012).

20611304340568 is a wasteful number, since it uses less digits than its factorization.

20611304340568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576413042577 (or 2576413042573 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 20611304340568 in words is "twenty trillion, six hundred eleven billion, three hundred four million, three hundred forty thousand, five hundred sixty-eight".