20555057212 has 24 divisors (see below), whose sum is σ = 36203563760. Its totient is φ = 10211287680.

The previous prime is 20555057209. The next prime is 20555057227. The reversal of 20555057212 is 21275055502.

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, 804823 + ... + 829969.

Almost surely, 2^20555057212 is an apocalyptic number.

It is an amenable number.

20555057212 is a deficient number, since it is larger than the sum of its proper divisors (15648506548).

20555057212 is a wasteful number, since it uses less digits than its factorization.

20555057212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26461 (or 26459 counting only the distinct ones).

The product of its (nonzero) digits is 35000, while the sum is 34.

The spelling of 20555057212 in words is "twenty billion, five hundred fifty-five million, fifty-seven thousand, two hundred twelve".