216056020671 has 24 divisors (see below), whose sum is σ = 330208385520. Its totient is φ = 135749385216.

The previous prime is 216056020657. The next prime is 216056020693. The reversal of 216056020671 is 176020650612.

It is a happy number.

216056020671 is a `hidden beast` number, since 2 + 1 + 6 + 0 + 560 + 20 + 6 + 71 = 666.

It is not a de Polignac number, because 216056020671 - 2⁵ = 216056020639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216056090671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3240276 + ... + 3306281.

It is an arithmetic number, because the mean of its divisors is an integer number (13758682730).

Almost surely, 2^216056020671 is an apocalyptic number.

216056020671 is a deficient number, since it is larger than the sum of its proper divisors (114152364849).

216056020671 is a wasteful number, since it uses less digits than its factorization.

216056020671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6546775 (or 6546772 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 216056020671 in words is "two hundred sixteen billion, fifty-six million, twenty thousand, six hundred seventy-one".