8122457851 has 2 divisors, whose sum is σ = 8122457852. Its totient is φ = 8122457850.

The previous prime is 8122457831. The next prime is 8122457869. The reversal of 8122457851 is 1587542218.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8122457851 is a prime.

It is a super-4 number, since 4×8122457851⁴ (a number of 41 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8122457798 and 8122457807.

It is not a weakly prime, because it can be changed into another prime (8122457821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4061228925 + 4061228926.

It is an arithmetic number, because the mean of its divisors is an integer number (4061228926).

Almost surely, 2^8122457851 is an apocalyptic number.

8122457851 is a deficient number, since it is larger than the sum of its proper divisors (1).

8122457851 is an equidigital number, since it uses as much as digits as its factorization.

8122457851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 179200, while the sum is 43.

The square root of 8122457851 is about 90124.6794779321. The cubic root of 8122457851 is about 2010.1531900604.

The spelling of 8122457851 in words is "eight billion, one hundred twenty-two million, four hundred fifty-seven thousand, eight hundred fifty-one".