9887386751401 has 2 divisors, whose sum is σ = 9887386751402. Its totient is φ = 9887386751400.

The previous prime is 9887386751387. The next prime is 9887386751447. The reversal of 9887386751401 is 1041576837889.

9887386751401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8776732128025 + 1110654623376 = 2962555^2 + 1053876^2 .

It is a cyclic number.

It is not a de Polignac number, because 9887386751401 - 2⁵ = 9887386751369 is a prime.

It is a super-3 number, since 3×9887386751401³ (a number of 40 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (9887386757401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4943693375700 + 4943693375701.

It is an arithmetic number, because the mean of its divisors is an integer number (4943693375701).

Almost surely, 2^{9887386751401} is an apocalyptic number.

It is an amenable number.

9887386751401 is a deficient number, since it is larger than the sum of its proper divisors (1).

9887386751401 is an equidigital number, since it uses as much as digits as its factorization.

9887386751401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81285120, while the sum is 67.

The spelling of 9887386751401 in words is "nine trillion, eight hundred eighty-seven billion, three hundred eighty-six million, seven hundred fifty-one thousand, four hundred one".