206611361564 has 6 divisors (see below), whose sum is σ = 361569882744. Its totient is φ = 103305680780.

The previous prime is 206611361549. The next prime is 206611361659. The reversal of 206611361564 is 465163116602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25826420192 + ... + 25826420199.

It is an arithmetic number, because the mean of its divisors is an integer number (60261647124).

Almost surely, 2^206611361564 is an apocalyptic number.

It is an amenable number.

206611361564 is a deficient number, since it is larger than the sum of its proper divisors (154958521180).

206611361564 is a wasteful number, since it uses less digits than its factorization.

206611361564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51652840395 (or 51652840393 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 206611361564 in words is "two hundred six billion, six hundred eleven million, three hundred sixty-one thousand, five hundred sixty-four".