216204126983 has 4 divisors (see below), whose sum is σ = 232835213688. Its totient is φ = 199573040280.

The previous prime is 216204126977. The next prime is 216204127057. The reversal of 216204126983 is 389621402612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216204126983 - 2¹⁰ = 216204125959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216204126953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8315543333 + ... + 8315543358.

It is an arithmetic number, because the mean of its divisors is an integer number (58208803422).

Almost surely, 2^216204126983 is an apocalyptic number.

216204126983 is a deficient number, since it is larger than the sum of its proper divisors (16631086705).

216204126983 is a wasteful number, since it uses less digits than its factorization.

216204126983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16631086704.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 216204126983 in words is "two hundred sixteen billion, two hundred four million, one hundred twenty-six thousand, nine hundred eighty-three".