8000451857 has 2 divisors, whose sum is σ = 8000451858. Its totient is φ = 8000451856.

The previous prime is 8000451793. The next prime is 8000451871. The reversal of 8000451857 is 7581540008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7056672016 + 943779841 = 84004^2 + 30721^2 .

It is a cyclic number.

It is not a de Polignac number, because 8000451857 - 2⁶ = 8000451793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8000451857.

It is not a weakly prime, because it can be changed into another prime (8000451887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4000225928 + 4000225929.

It is an arithmetic number, because the mean of its divisors is an integer number (4000225929).

Almost surely, 2^8000451857 is an apocalyptic number.

It is an amenable number.

8000451857 is a deficient number, since it is larger than the sum of its proper divisors (1).

8000451857 is an equidigital number, since it uses as much as digits as its factorization.

8000451857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 8000451857 is about 89445.2450217450. The cubic root of 8000451857 is about 2000.0376540411.

The spelling of 8000451857 in words is "eight billion, four hundred fifty-one thousand, eight hundred fifty-seven".