87086173541 has 2 divisors, whose sum is σ = 87086173542. Its totient is φ = 87086173540.

The previous prime is 87086173511. The next prime is 87086173567. The reversal of 87086173541 is 14537168078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52143722500 + 34942451041 = 228350^2 + 186929^2 .

It is a cyclic number.

It is not a de Polignac number, because 87086173541 - 2⁶ = 87086173477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87086173541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87086173511) 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, 43543086770 + 43543086771.

It is an arithmetic number, because the mean of its divisors is an integer number (43543086771).

Almost surely, 2^87086173541 is an apocalyptic number.

It is an amenable number.

87086173541 is a deficient number, since it is larger than the sum of its proper divisors (1).

87086173541 is an equidigital number, since it uses as much as digits as its factorization.

87086173541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 87086173541 in words is "eighty-seven billion, eighty-six million, one hundred seventy-three thousand, five hundred forty-one".