206556001632 has 72 divisors (see below), whose sum is σ = 587557853064. Its totient is φ = 68832751104.

The previous prime is 206556001607. The next prime is 206556001649. The reversal of 206556001632 is 236100655602.

It is a happy number.

206556001632 is a `hidden beast` number, since 2 + 0 + 6 + 5 + 5 + 600 + 16 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 950748 + ... + 1147620.

It is an arithmetic number, because the mean of its divisors is an integer number (8160525737).

Almost surely, 2^206556001632 is an apocalyptic number.

It is an amenable number.

206556001632 is an abundant number, since it is smaller than the sum of its proper divisors (381001851432).

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

206556001632 is a wasteful number, since it uses less digits than its factorization.

206556001632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200532 (or 200521 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 206556001632 in words is "two hundred six billion, five hundred fifty-six million, one thousand, six hundred thirty-two".