87715454417 has 2 divisors, whose sum is σ = 87715454418. Its totient is φ = 87715454416.

The previous prime is 87715454357. The next prime is 87715454441. The reversal of 87715454417 is 71445451778.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65047441936 + 22668012481 = 255044^2 + 150559^2 .

It is a cyclic number.

It is not a de Polignac number, because 87715454417 - 2²⁴ = 87698677201 is a prime.

It is not a weakly prime, because it can be changed into another prime (87715454317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43857727208 + 43857727209.

It is an arithmetic number, because the mean of its divisors is an integer number (43857727209).

Almost surely, 2^87715454417 is an apocalyptic number.

It is an amenable number.

87715454417 is a deficient number, since it is larger than the sum of its proper divisors (1).

87715454417 is an equidigital number, since it uses as much as digits as its factorization.

87715454417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4390400, while the sum is 53.

The spelling of 87715454417 in words is "eighty-seven billion, seven hundred fifteen million, four hundred fifty-four thousand, four hundred seventeen".