201615655612 has 12 divisors (see below), whose sum is σ = 403231311280. Its totient is φ = 86406709536.

The previous prime is 201615655609. The next prime is 201615655621. The reversal of 201615655612 is 216556516102.

201615655612 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3600279537 + ... + 3600279592.

Almost surely, 2^201615655612 is an apocalyptic number.

It is an amenable number.

201615655612 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

201615655612 is a wasteful number, since it uses less digits than its factorization.

201615655612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7200559140 (or 7200559138 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 201615655612 in words is "two hundred one billion, six hundred fifteen million, six hundred fifty-five thousand, six hundred twelve".