20655353705536 has 112 divisors (see below), whose sum is σ = 47582307273600. Its totient is φ = 8792109342720.

The previous prime is 20655353705533. The next prime is 20655353705573. The reversal of 20655353705536 is 63550735355602.

It is not an unprimeable number, because it can be changed into a prime (20655353705533) 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, 1954755 + ... + 6718018.

Almost surely, 2^{20655353705536} is an apocalyptic number.

It is an amenable number.

20655353705536 is an abundant number, since it is smaller than the sum of its proper divisors (26926953568064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20655353705536 is a wasteful number, since it uses less digits than its factorization.

20655353705536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8673012 (or 8673002 counting only the distinct ones).

The product of its (nonzero) digits is 42525000, while the sum is 55.

The spelling of 20655353705536 in words is "twenty trillion, six hundred fifty-five billion, three hundred fifty-three million, seven hundred five thousand, five hundred thirty-six".