2216115635977 has 2 divisors, whose sum is σ = 2216115635978. Its totient is φ = 2216115635976.

The previous prime is 2216115635933. The next prime is 2216115635989. The reversal of 2216115635977 is 7795365116122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1848468653056 + 367646982921 = 1359584^2 + 606339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2216115635977 is a prime.

It is a super-2 number, since 2×2216115635977² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2216115635917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108057817988 + 1108057817989.

It is an arithmetic number, because the mean of its divisors is an integer number (1108057817989).

Almost surely, 2^{2216115635977} is an apocalyptic number.

It is an amenable number.

2216115635977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216115635977 is an equidigital number, since it uses as much as digits as its factorization.

2216115635977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4762800, while the sum is 55.

The spelling of 2216115635977 in words is "two trillion, two hundred sixteen billion, one hundred fifteen million, six hundred thirty-five thousand, nine hundred seventy-seven".