7850120851 has 2 divisors, whose sum is σ = 7850120852. Its totient is φ = 7850120850.

The previous prime is 7850120849. The next prime is 7850120881. The reversal of 7850120851 is 1580210587.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7850120851 - 2¹ = 7850120849 is a prime.

Together with 7850120849, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 7850120851.

It is not a weakly prime, because it can be changed into another prime (7850120881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3925060425 + 3925060426.

It is an arithmetic number, because the mean of its divisors is an integer number (3925060426).

Almost surely, 2^7850120851 is an apocalyptic number.

7850120851 is a deficient number, since it is larger than the sum of its proper divisors (1).

7850120851 is an equidigital number, since it uses as much as digits as its factorization.

7850120851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22400, while the sum is 37.

The square root of 7850120851 is about 88600.9077323703. The cubic root of 7850120851 is about 1987.4312496346.

The spelling of 7850120851 in words is "seven billion, eight hundred fifty million, one hundred twenty thousand, eight hundred fifty-one".