20066642216 has 32 divisors (see below), whose sum is σ = 39806316000. Its totient is φ = 9456987456.

The previous prime is 20066642213. The next prime is 20066642221. The reversal of 20066642216 is 61224666002.

It is not an unprimeable number, because it can be changed into a prime (20066642213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305126 + ... + 365013.

It is an arithmetic number, because the mean of its divisors is an integer number (1243947375).

Almost surely, 2^20066642216 is an apocalyptic number.

It is an amenable number.

20066642216 is a deficient number, since it is larger than the sum of its proper divisors (19739673784).

20066642216 is a wasteful number, since it uses less digits than its factorization.

20066642216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670361 (or 670357 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 20066642216 in words is "twenty billion, sixty-six million, six hundred forty-two thousand, two hundred sixteen".