87964129193 has 2 divisors, whose sum is σ = 87964129194. Its totient is φ = 87964129192.

The previous prime is 87964129159. The next prime is 87964129237. The reversal of 87964129193 is 39192146978.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68564375104 + 19399754089 = 261848^2 + 139283^2 .

It is a cyclic number.

It is not a de Polignac number, because 87964129193 - 2¹⁰ = 87964128169 is a prime.

It is not a weakly prime, because it can be changed into another prime (87964129153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43982064596 + 43982064597.

It is an arithmetic number, because the mean of its divisors is an integer number (43982064597).

Almost surely, 2^87964129193 is an apocalyptic number.

It is an amenable number.

87964129193 is a deficient number, since it is larger than the sum of its proper divisors (1).

87964129193 is an equidigital number, since it uses as much as digits as its factorization.

87964129193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 59.

The spelling of 87964129193 in words is "eighty-seven billion, nine hundred sixty-four million, one hundred twenty-nine thousand, one hundred ninety-three".