206401563970 has 64 divisors (see below), whose sum is σ = 428809708800. Its totient is φ = 70065181440.

The previous prime is 206401563947. The next prime is 206401564037. The reversal of 206401563970 is 79365104602.

206401563970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11122900 + ... + 11141440.

It is an arithmetic number, because the mean of its divisors is an integer number (6700151700).

Almost surely, 2^206401563970 is an apocalyptic number.

206401563970 is an abundant number, since it is smaller than the sum of its proper divisors (222408144830).

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

206401563970 is a wasteful number, since it uses less digits than its factorization.

206401563970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20123.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 206401563970 in words is "two hundred six billion, four hundred one million, five hundred sixty-three thousand, nine hundred seventy".