216442920959 has 8 divisors (see below), whose sum is σ = 231316680528. Its totient is φ = 201807141760.

The previous prime is 216442920949. The next prime is 216442920989. The reversal of 216442920959 is 959029244612.

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

It is a cyclic number.

It is not a de Polignac number, because 216442920959 - 2⁸ = 216442920703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216442920959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216442920949) 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, 59493212 + ... + 59496849.

It is an arithmetic number, because the mean of its divisors is an integer number (28914585066).

Almost surely, 2^216442920959 is an apocalyptic number.

216442920959 is a deficient number, since it is larger than the sum of its proper divisors (14873759569).

216442920959 is a wasteful number, since it uses less digits than its factorization.

216442920959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118990185.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 216442920959 in words is "two hundred sixteen billion, four hundred forty-two million, nine hundred twenty thousand, nine hundred fifty-nine".