209553561102 has 16 divisors (see below), whose sum is σ = 419151450240. Its totient is φ = 69843799032.

The previous prime is 209553561089. The next prime is 209553561167. The reversal of 209553561102 is 201165355902.

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, 1785388 + ... + 1899135.

It is an arithmetic number, because the mean of its divisors is an integer number (26196965640).

Almost surely, 2^209553561102 is an apocalyptic number.

209553561102 is an abundant number, since it is smaller than the sum of its proper divisors (209597889138).

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

209553561102 is a wasteful number, since it uses less digits than its factorization.

209553561102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3694007.

The product of its (nonzero) digits is 81000, while the sum is 39.

The spelling of 209553561102 in words is "two hundred nine billion, five hundred fifty-three million, five hundred sixty-one thousand, one hundred two".