216937277441 has 4 divisors (see below), whose sum is σ = 216939007572. Its totient is φ = 216935547312.

The previous prime is 216937277429. The next prime is 216937277467. The reversal of 216937277441 is 144772739612.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16326450625 + 200610826816 = 127775^2 + 447896^2 .

It is a cyclic number.

It is not a de Polignac number, because 216937277441 - 2¹⁰ = 216937276417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216937277741) 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, 660926 + ... + 933111.

It is an arithmetic number, because the mean of its divisors is an integer number (54234751893).

Almost surely, 2^216937277441 is an apocalyptic number.

It is an amenable number.

216937277441 is a deficient number, since it is larger than the sum of its proper divisors (1730131).

216937277441 is a wasteful number, since it uses less digits than its factorization.

216937277441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730130.

The product of its digits is 3556224, while the sum is 53.

The spelling of 216937277441 in words is "two hundred sixteen billion, nine hundred thirty-seven million, two hundred seventy-seven thousand, four hundred forty-one".