82531814987 has 2 divisors, whose sum is σ = 82531814988. Its totient is φ = 82531814986.

The previous prime is 82531814947. The next prime is 82531815049. The reversal of 82531814987 is 78941813528.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82531814987 - 2²⁰ = 82530766411 is a prime.

It is not a weakly prime, because it can be changed into another prime (82531814947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41265907493 + 41265907494.

It is an arithmetic number, because the mean of its divisors is an integer number (41265907494).

Almost surely, 2^82531814987 is an apocalyptic number.

82531814987 is a deficient number, since it is larger than the sum of its proper divisors (1).

82531814987 is an equidigital number, since it uses as much as digits as its factorization.

82531814987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 56.

The spelling of 82531814987 in words is "eighty-two billion, five hundred thirty-one million, eight hundred fourteen thousand, nine hundred eighty-seven".