7245665616851 has 2 divisors, whose sum is σ = 7245665616852. Its totient is φ = 7245665616850.

The previous prime is 7245665616811. The next prime is 7245665616853. The reversal of 7245665616851 is 1586165665427.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7245665616851 is a prime.

Together with 7245665616853, 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 (7245665616853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3622832808425 + 3622832808426.

It is an arithmetic number, because the mean of its divisors is an integer number (3622832808426).

Almost surely, 2^{7245665616851} is an apocalyptic number.

7245665616851 is a deficient number, since it is larger than the sum of its proper divisors (1).

7245665616851 is an equidigital number, since it uses as much as digits as its factorization.

7245665616851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576000, while the sum is 62.

The spelling of 7245665616851 in words is "seven trillion, two hundred forty-five billion, six hundred sixty-five million, six hundred sixteen thousand, eight hundred fifty-one".