6268566881 has 2 divisors, whose sum is σ = 6268566882. Its totient is φ = 6268566880.

The previous prime is 6268566841. The next prime is 6268566907. The reversal of 6268566881 is 1886658626.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6019432225 + 249134656 = 77585^2 + 15784^2 .

It is a cyclic number.

It is not a de Polignac number, because 6268566881 - 2²⁶ = 6201458017 is a prime.

It is a super-2 number, since 2×6268566881² = 78589861483140136322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6268566841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3134283440 + 3134283441.

It is an arithmetic number, because the mean of its divisors is an integer number (3134283441).

Almost surely, 2^6268566881 is an apocalyptic number.

It is an amenable number.

6268566881 is a deficient number, since it is larger than the sum of its proper divisors (1).

6268566881 is an equidigital number, since it uses as much as digits as its factorization.

6268566881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6635520, while the sum is 56.

The square root of 6268566881 is about 79174.2816891950. The cubic root of 6268566881 is about 1843.8379720683.

The spelling of 6268566881 in words is "six billion, two hundred sixty-eight million, five hundred sixty-six thousand, eight hundred eighty-one".