216153728371 has 16 divisors (see below), whose sum is σ = 252334310400. Its totient is φ = 185083531080.

The previous prime is 216153728369. The next prime is 216153728407. The reversal of 216153728371 is 173827351612.

It is not a de Polignac number, because 216153728371 - 2¹ = 216153728369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216153728311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8550 + ... + 657556.

It is an arithmetic number, because the mean of its divisors is an integer number (15770894400).

Almost surely, 2^216153728371 is an apocalyptic number.

216153728371 is a deficient number, since it is larger than the sum of its proper divisors (36180582029).

216153728371 is an frugal number, since it uses more digits than its factorization.

216153728371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649999 (or 649985 counting only the distinct ones).

The product of its digits is 423360, while the sum is 46.

The spelling of 216153728371 in words is "two hundred sixteen billion, one hundred fifty-three million, seven hundred twenty-eight thousand, three hundred seventy-one".