7065799121 has 2 divisors, whose sum is σ = 7065799122. Its totient is φ = 7065799120.

The previous prime is 7065799099. The next prime is 7065799123. The reversal of 7065799121 is 1219975607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6027348496 + 1038450625 = 77636^2 + 32225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7065799121 is a prime.

Together with 7065799123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7065799123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3532899560 + 3532899561.

It is an arithmetic number, because the mean of its divisors is an integer number (3532899561).

Almost surely, 2^7065799121 is an apocalyptic number.

It is an amenable number.

7065799121 is a deficient number, since it is larger than the sum of its proper divisors (1).

7065799121 is an equidigital number, since it uses as much as digits as its factorization.

7065799121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 238140, while the sum is 47.

The square root of 7065799121 is about 84058.3078642439. The cubic root of 7065799121 is about 1918.9062709733.

The spelling of 7065799121 in words is "seven billion, sixty-five million, seven hundred ninety-nine thousand, one hundred twenty-one".