2165138616467 has 2 divisors, whose sum is σ = 2165138616468. Its totient is φ = 2165138616466.

The previous prime is 2165138616401. The next prime is 2165138616491. The reversal of 2165138616467 is 7646168315612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2165138616467 - 2²⁰ = 2165137567891 is a prime.

It is not a weakly prime, because it can be changed into another prime (2165138616967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082569308233 + 1082569308234.

It is an arithmetic number, because the mean of its divisors is an integer number (1082569308234).

Almost surely, 2^{2165138616467} is an apocalyptic number.

2165138616467 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165138616467 is an equidigital number, since it uses as much as digits as its factorization.

2165138616467 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8709120, while the sum is 56.

The spelling of 2165138616467 in words is "two trillion, one hundred sixty-five billion, one hundred thirty-eight million, six hundred sixteen thousand, four hundred sixty-seven".