2216156461 has 2 divisors, whose sum is σ = 2216156462. Its totient is φ = 2216156460.

The previous prime is 2216156399. The next prime is 2216156491. The reversal of 2216156461 is 1646516122.

2216156461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1190940100 + 1025216361 = 34510^2 + 32019^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216156461 - 2¹⁷ = 2216025389 is a prime.

It is a super-2 number, since 2×2216156461² = 9822698919264089042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2216156491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108078230 + 1108078231.

It is an arithmetic number, because the mean of its divisors is an integer number (1108078231).

Almost surely, 2^2216156461 is an apocalyptic number.

It is an amenable number.

2216156461 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216156461 is an equidigital number, since it uses as much as digits as its factorization.

2216156461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 2216156461 is about 47076.0710021556. The cubic root of 2216156461 is about 1303.7674658206.

The spelling of 2216156461 in words is "two billion, two hundred sixteen million, one hundred fifty-six thousand, four hundred sixty-one".