216151651065 has 24 divisors (see below), whose sum is σ = 402306747840. Its totient is φ = 98812183008.

The previous prime is 216151651031. The next prime is 216151651073. The reversal of 216151651065 is 560156151612.

It is not a de Polignac number, because 216151651065 - 2³⁵ = 181791912697 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147041205 + ... + 147042674.

It is an arithmetic number, because the mean of its divisors is an integer number (16762781160).

Almost surely, 2^216151651065 is an apocalyptic number.

It is an amenable number.

216151651065 is a deficient number, since it is larger than the sum of its proper divisors (186155096775).

216151651065 is a wasteful number, since it uses less digits than its factorization.

216151651065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294083901 (or 294083894 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 39.

The spelling of 216151651065 in words is "two hundred sixteen billion, one hundred fifty-one million, six hundred fifty-one thousand, sixty-five".