87925736917 has 2 divisors, whose sum is σ = 87925736918. Its totient is φ = 87925736916.

The previous prime is 87925736911. The next prime is 87925736989. The reversal of 87925736917 is 71963752978.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70463171601 + 17462565316 = 265449^2 + 132146^2 .

It is a cyclic number.

It is not a de Polignac number, because 87925736917 - 2¹⁵ = 87925704149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87925736911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43962868458 + 43962868459.

It is an arithmetic number, because the mean of its divisors is an integer number (43962868459).

Almost surely, 2^87925736917 is an apocalyptic number.

It is an amenable number.

87925736917 is a deficient number, since it is larger than the sum of its proper divisors (1).

87925736917 is an equidigital number, since it uses as much as digits as its factorization.

87925736917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40007520, while the sum is 64.

The spelling of 87925736917 in words is "eighty-seven billion, nine hundred twenty-five million, seven hundred thirty-six thousand, nine hundred seventeen".