8451855959 has 2 divisors, whose sum is σ = 8451855960. Its totient is φ = 8451855958.

The previous prime is 8451855911. The next prime is 8451856003. The reversal of 8451855959 is 9595581548.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8451855959 - 2⁸ = 8451855703 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8451855898 and 8451855907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8451854959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4225927979 + 4225927980.

It is an arithmetic number, because the mean of its divisors is an integer number (4225927980).

Almost surely, 2^8451855959 is an apocalyptic number.

8451855959 is a deficient number, since it is larger than the sum of its proper divisors (1).

8451855959 is an equidigital number, since it uses as much as digits as its factorization.

8451855959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960000, while the sum is 59.

The square root of 8451855959 is about 91933.9760861021. The cubic root of 8451855959 is about 2036.9671676515.

The spelling of 8451855959 in words is "eight billion, four hundred fifty-one million, eight hundred fifty-five thousand, nine hundred fifty-nine".