87070434971687 has 2 divisors, whose sum is σ = 87070434971688. Its totient is φ = 87070434971686.

The previous prime is 87070434971659. The next prime is 87070434971711. The reversal of 87070434971687 is 78617943407078.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87070434971687 - 2²⁰ = 87070433923111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87070434971687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87070434971627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43535217485843 + 43535217485844.

It is an arithmetic number, because the mean of its divisors is an integer number (43535217485844).

Almost surely, 2^{87070434971687} is an apocalyptic number.

87070434971687 is a deficient number, since it is larger than the sum of its proper divisors (1).

87070434971687 is an equidigital number, since it uses as much as digits as its factorization.

87070434971687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 398297088, while the sum is 71.

The spelling of 87070434971687 in words is "eighty-seven trillion, seventy billion, four hundred thirty-four million, nine hundred seventy-one thousand, six hundred eighty-seven".