20555662206 has 32 divisors (see below), whose sum is σ = 42408547200. Its totient is φ = 6637316256.

The previous prime is 20555662201. The next prime is 20555662219. The reversal of 20555662206 is 60226655502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20555662201) 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, 153556 + ... + 254343.

It is an arithmetic number, because the mean of its divisors is an integer number (1325267100).

Almost surely, 2^20555662206 is an apocalyptic number.

20555662206 is an abundant number, since it is smaller than the sum of its proper divisors (21852884994).

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

20555662206 is a wasteful number, since it uses less digits than its factorization.

20555662206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408168.

The product of its (nonzero) digits is 216000, while the sum is 39.

It can be divided in two parts, 205556 and 62206, that added together give a palindrome (267762).

The spelling of 20555662206 in words is "twenty billion, five hundred fifty-five million, six hundred sixty-two thousand, two hundred six".