206641654530 has 16 divisors (see below), whose sum is σ = 495939970944. Its totient is φ = 55104441200.

The previous prime is 206641654523. The next prime is 206641654537. The reversal of 206641654530 is 35456146602.

It is an interprime number because it is at equal distance from previous prime (206641654523) and next prime (206641654537).

It is not an unprimeable number, because it can be changed into a prime (206641654537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3444027546 + ... + 3444027605.

It is an arithmetic number, because the mean of its divisors is an integer number (30996248184).

Almost surely, 2^206641654530 is an apocalyptic number.

206641654530 is an abundant number, since it is smaller than the sum of its proper divisors (289298316414).

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

206641654530 is a wasteful number, since it uses less digits than its factorization.

206641654530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6888055161.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 206641654530 in words is "two hundred six billion, six hundred forty-one million, six hundred fifty-four thousand, five hundred thirty".