6567020081 has 2 divisors, whose sum is σ = 6567020082. Its totient is φ = 6567020080.

The previous prime is 6567020069. The next prime is 6567020107. The reversal of 6567020081 is 1800207656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4818442225 + 1748577856 = 69415^2 + 41816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6567020081 is a prime.

It is a super-2 number, since 2×6567020081² = 86251505488514493122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6567020381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3283510040 + 3283510041.

It is an arithmetic number, because the mean of its divisors is an integer number (3283510041).

Almost surely, 2^6567020081 is an apocalyptic number.

It is an amenable number.

6567020081 is a deficient number, since it is larger than the sum of its proper divisors (1).

6567020081 is an equidigital number, since it uses as much as digits as its factorization.

6567020081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 6567020081 is about 81037.1524734180. The cubic root of 6567020081 is about 1872.6478433573.

The spelling of 6567020081 in words is "six billion, five hundred sixty-seven million, twenty thousand, eighty-one".