2165613436157 has 2 divisors, whose sum is σ = 2165613436158. Its totient is φ = 2165613436156.

The previous prime is 2165613436123. The next prime is 2165613436159. The reversal of 2165613436157 is 7516343165612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1763440578916 + 402172857241 = 1327946^2 + 634171^2 .

It is a cyclic number.

It is not a de Polignac number, because 2165613436157 - 2¹⁶ = 2165613370621 is a prime.

Together with 2165613436159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2165613436159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082806718078 + 1082806718079.

It is an arithmetic number, because the mean of its divisors is an integer number (1082806718079).

Almost surely, 2^{2165613436157} is an apocalyptic number.

It is an amenable number.

2165613436157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165613436157 is an equidigital number, since it uses as much as digits as its factorization.

2165613436157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 50.

The spelling of 2165613436157 in words is "two trillion, one hundred sixty-five billion, six hundred thirteen million, four hundred thirty-six thousand, one hundred fifty-seven".