8450643077 has 2 divisors, whose sum is σ = 8450643078. Its totient is φ = 8450643076.

The previous prime is 8450643041. The next prime is 8450643107. The reversal of 8450643077 is 7703460548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7459085956 + 991557121 = 86366^2 + 31489^2 .

It is a cyclic number.

It is not a de Polignac number, because 8450643077 - 2⁶ = 8450643013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8450642077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4225321538 + 4225321539.

It is an arithmetic number, because the mean of its divisors is an integer number (4225321539).

Almost surely, 2^8450643077 is an apocalyptic number.

It is an amenable number.

8450643077 is a deficient number, since it is larger than the sum of its proper divisors (1).

8450643077 is an equidigital number, since it uses as much as digits as its factorization.

8450643077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 44.

The square root of 8450643077 is about 91927.3793654535. The cubic root of 8450643077 is about 2036.8697247934.

The spelling of 8450643077 in words is "eight billion, four hundred fifty million, six hundred forty-three thousand, seventy-seven".