87163135439 has 2 divisors, whose sum is σ = 87163135440. Its totient is φ = 87163135438.

The previous prime is 87163135421. The next prime is 87163135517. The reversal of 87163135439 is 93453136178.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87163135439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87163135139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43581567719 + 43581567720.

It is an arithmetic number, because the mean of its divisors is an integer number (43581567720).

Almost surely, 2^87163135439 is an apocalyptic number.

87163135439 is a deficient number, since it is larger than the sum of its proper divisors (1).

87163135439 is an equidigital number, since it uses as much as digits as its factorization.

87163135439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 50.

The spelling of 87163135439 in words is "eighty-seven billion, one hundred sixty-three million, one hundred thirty-five thousand, four hundred thirty-nine".