20555550468 has 60 divisors (see below), whose sum is σ = 53798285772. Its totient is φ = 6843942720.

The previous prime is 20555550443. The next prime is 20555550479. The reversal of 20555550468 is 86405555502.

20555550468 is a `hidden beast` number, since 2 + 0 + 5 + 55 + 550 + 46 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17785423044 + 2770127424 = 133362^2 + 52632^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 247978 + ... + 320318.

Almost surely, 2^20555550468 is an apocalyptic number.

It is an amenable number.

20555550468 is an abundant number, since it is smaller than the sum of its proper divisors (33242735304).

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

20555550468 is a wasteful number, since it uses less digits than its factorization.

20555550468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73234 (or 73223 counting only the distinct ones).

The product of its (nonzero) digits is 1200000, while the sum is 45.

The spelling of 20555550468 in words is "twenty billion, five hundred fifty-five million, five hundred fifty thousand, four hundred sixty-eight".