206564015663612 has 48 divisors (see below), whose sum is σ = 368437484901024. Its totient is φ = 101297545440000.

The previous prime is 206564015663611. The next prime is 206564015663639. The reversal of 206564015663612 is 216366510465602.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206564015663611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9019857362 + ... + 9019880262.

It is an arithmetic number, because the mean of its divisors is an integer number (7675780935438).

Almost surely, 2^{206564015663612} is an apocalyptic number.

It is an amenable number.

206564015663612 is a deficient number, since it is larger than the sum of its proper divisors (161873469237412).

206564015663612 is a wasteful number, since it uses less digits than its factorization.

206564015663612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36110 (or 36108 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 53.

The spelling of 206564015663612 in words is "two hundred six trillion, five hundred sixty-four billion, fifteen million, six hundred sixty-three thousand, six hundred twelve".