82531814947 has 2 divisors, whose sum is σ = 82531814948. Its totient is φ = 82531814946.

The previous prime is 82531814929. The next prime is 82531814987. The reversal of 82531814947 is 74941813528.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82531814947 is a prime.

It is a super-2 number, since 2×82531814947² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82531814894 and 82531814903.

It is not a weakly prime, because it can be changed into another prime (82531814987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41265907473 + 41265907474.

It is an arithmetic number, because the mean of its divisors is an integer number (41265907474).

Almost surely, 2^82531814947 is an apocalyptic number.

82531814947 is a deficient number, since it is larger than the sum of its proper divisors (1).

82531814947 is an equidigital number, since it uses as much as digits as its factorization.

82531814947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 52.

The spelling of 82531814947 in words is "eighty-two billion, five hundred thirty-one million, eight hundred fourteen thousand, nine hundred forty-seven".