20655032560 has 40 divisors (see below), whose sum is σ = 48518050896. Its totient is φ = 8176834560.

The previous prime is 20655032537. The next prime is 20655032597. The reversal of 20655032560 is 6523055602.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1323106 + ... + 1338625.

Almost surely, 2^20655032560 is an apocalyptic number.

20655032560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20655032560 is an abundant number, since it is smaller than the sum of its proper divisors (27863018336).

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

20655032560 is a wasteful number, since it uses less digits than its factorization.

20655032560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661841 (or 2661835 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

The spelling of 20655032560 in words is "twenty billion, six hundred fifty-five million, thirty-two thousand, five hundred sixty".