216460231061 has 4 divisors (see below), whose sum is σ = 216566916300. Its totient is φ = 216353545824.

The previous prime is 216460231033. The next prime is 216460231093. The reversal of 216460231061 is 160132064612.

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 215769540100 + 690690961 = 464510^2 + 26281^2 .

It is a cyclic number.

It is not a de Polignac number, because 216460231061 - 2¹⁰ = 216460230037 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 (216460281061) 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, 53339576 + ... + 53343633.

It is an arithmetic number, because the mean of its divisors is an integer number (54141729075).

Almost surely, 2^216460231061 is an apocalyptic number.

It is an amenable number.

216460231061 is a deficient number, since it is larger than the sum of its proper divisors (106685239).

216460231061 is a wasteful number, since it uses less digits than its factorization.

216460231061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106685238.

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 216460231061 its reverse (160132064612), we get a palindrome (376592295673).

The spelling of 216460231061 in words is "two hundred sixteen billion, four hundred sixty million, two hundred thirty-one thousand, sixty-one".