53211716666 has 8 divisors (see below), whose sum is σ = 79927367520. Its totient is φ = 26569260828.

The previous prime is 53211716651. The next prime is 53211716731. The reversal of 53211716666 is 66661711235.

53211716666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 18296936 + ... + 18299843.

It is an arithmetic number, because the mean of its divisors is an integer number (9990920940).

Almost surely, 2^53211716666 is an apocalyptic number.

53211716666 is a deficient number, since it is larger than the sum of its proper divisors (26715650854).

53211716666 is a wasteful number, since it uses less digits than its factorization.

53211716666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36597508.

The product of its digits is 272160, while the sum is 44.

The spelling of 53211716666 in words is "fifty-three billion, two hundred eleven million, seven hundred sixteen thousand, six hundred sixty-six".