206255212920 has 128 divisors (see below), whose sum is σ = 696220416000. Its totient is φ = 54305147520.

The previous prime is 206255212913. The next prime is 206255212927. The reversal of 206255212920 is 29212552602.

It is a happy number.

206255212920 is a `hidden beast` number, since 2 + 0 + 6 + 2 + 552 + 12 + 92 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (206255212913) and next prime (206255212927).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206255212927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1123396 + ... + 1294035.

It is an arithmetic number, because the mean of its divisors is an integer number (5439222000).

Almost surely, 2^206255212920 is an apocalyptic number.

206255212920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206255212920 is an abundant number, since it is smaller than the sum of its proper divisors (489965203080).

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

206255212920 is a wasteful number, since it uses less digits than its factorization.

206255212920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417530 (or 2417520 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 206255212920 in words is "two hundred six billion, two hundred fifty-five million, two hundred twelve thousand, nine hundred twenty".