20608854216 has 32 divisors (see below), whose sum is σ = 51525914400. Its totient is φ = 6869114240.

The previous prime is 20608854179. The next prime is 20608854223. The reversal of 20608854216 is 61245880602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457555 + ... + 500573.

It is an arithmetic number, because the mean of its divisors is an integer number (1610184825).

Almost surely, 2^20608854216 is an apocalyptic number.

It is an amenable number.

20608854216 is an abundant number, since it is smaller than the sum of its proper divisors (30917060184).

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

20608854216 is a wasteful number, since it uses less digits than its factorization.

20608854216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62989 (or 62985 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 20608854216 in words is "twenty billion, six hundred eight million, eight hundred fifty-four thousand, two hundred sixteen".