87205051537 has 2 divisors, whose sum is σ = 87205051538. Its totient is φ = 87205051536.

The previous prime is 87205051529. The next prime is 87205051559. The reversal of 87205051537 is 73515050278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56434278481 + 30770773056 = 237559^2 + 175416^2 .

It is a cyclic number.

It is not a de Polignac number, because 87205051537 - 2³ = 87205051529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87205051493 and 87205051502.

It is not a weakly prime, because it can be changed into another prime (87205051597) 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, 43602525768 + 43602525769.

It is an arithmetic number, because the mean of its divisors is an integer number (43602525769).

Almost surely, 2^87205051537 is an apocalyptic number.

It is an amenable number.

87205051537 is a deficient number, since it is larger than the sum of its proper divisors (1).

87205051537 is an equidigital number, since it uses as much as digits as its factorization.

87205051537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294000, while the sum is 43.

The spelling of 87205051537 in words is "eighty-seven billion, two hundred five million, fifty-one thousand, five hundred thirty-seven".