82864869847 has 2 divisors, whose sum is σ = 82864869848. Its totient is φ = 82864869846.

The previous prime is 82864869811. The next prime is 82864869869. The reversal of 82864869847 is 74896846828.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82864869847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82864861847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41432434923 + 41432434924.

It is an arithmetic number, because the mean of its divisors is an integer number (41432434924).

Almost surely, 2^82864869847 is an apocalyptic number.

82864869847 is a deficient number, since it is larger than the sum of its proper divisors (1).

82864869847 is an equidigital number, since it uses as much as digits as its factorization.

82864869847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 297271296, while the sum is 70.

The spelling of 82864869847 in words is "eighty-two billion, eight hundred sixty-four million, eight hundred sixty-nine thousand, eight hundred forty-seven".