87281618279 has 2 divisors, whose sum is σ = 87281618280. Its totient is φ = 87281618278.

The previous prime is 87281618251. The next prime is 87281618393. The reversal of 87281618279 is 97281618278.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87281618279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87281698279) 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, 43640809139 + 43640809140.

It is an arithmetic number, because the mean of its divisors is an integer number (43640809140).

Almost surely, 2^87281618279 is an apocalyptic number.

87281618279 is a deficient number, since it is larger than the sum of its proper divisors (1).

87281618279 is an equidigital number, since it uses as much as digits as its factorization.

87281618279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5419008, while the sum is 59.

Subtracting 87281618279 from its reverse (97281618278), we obtain a palindrome (9999999999).

The spelling of 87281618279 in words is "eighty-seven billion, two hundred eighty-one million, six hundred eighteen thousand, two hundred seventy-nine".