8370121916251 has 2 divisors, whose sum is σ = 8370121916252. Its totient is φ = 8370121916250.

The previous prime is 8370121916243. The next prime is 8370121916297. The reversal of 8370121916251 is 1526191210738.

It is an a-pointer prime, because the next prime (8370121916297) can be obtained adding 8370121916251 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8370121916251 - 2³ = 8370121916243 is a prime.

It is not a weakly prime, because it can be changed into another prime (8370121916201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4185060958125 + 4185060958126.

It is an arithmetic number, because the mean of its divisors is an integer number (4185060958126).

Almost surely, 2^{8370121916251} is an apocalyptic number.

8370121916251 is a deficient number, since it is larger than the sum of its proper divisors (1).

8370121916251 is an equidigital number, since it uses as much as digits as its factorization.

8370121916251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 8370121916251 in words is "eight trillion, three hundred seventy billion, one hundred twenty-one million, nine hundred sixteen thousand, two hundred fifty-one".