20616560600655 has 16 divisors (see below), whose sum is σ = 33010382944224. Its totient is φ = 10987536992640.

The previous prime is 20616560600653. The next prime is 20616560600659. The reversal of 20616560600655 is 55600606561602.

It is not a de Polignac number, because 20616560600655 - 2¹ = 20616560600653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20616560600653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497603244 + ... + 497644673.

It is an arithmetic number, because the mean of its divisors is an integer number (2063148934014).

Almost surely, 2^{20616560600655} is an apocalyptic number.

20616560600655 is a deficient number, since it is larger than the sum of its proper divisors (12393822343569).

20616560600655 is a wasteful number, since it uses less digits than its factorization.

20616560600655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995249306.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 20616560600655 in words is "twenty trillion, six hundred sixteen billion, five hundred sixty million, six hundred thousand, six hundred fifty-five".