99603086321 has 2 divisors, whose sum is σ = 99603086322. Its totient is φ = 99603086320.

The previous prime is 99603086311. The next prime is 99603086327. The reversal of 99603086321 is 12368030699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95901702400 + 3701383921 = 309680^2 + 60839^2 .

It is an emirp because it is prime and its reverse (12368030699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99603086321 - 2¹⁰ = 99603085297 is a prime.

It is not a weakly prime, because it can be changed into another prime (99603086327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49801543160 + 49801543161.

It is an arithmetic number, because the mean of its divisors is an integer number (49801543161).

Almost surely, 2^99603086321 is an apocalyptic number.

It is an amenable number.

99603086321 is a deficient number, since it is larger than the sum of its proper divisors (1).

99603086321 is an equidigital number, since it uses as much as digits as its factorization.

99603086321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 99603086321 in words is "ninety-nine billion, six hundred three million, eighty-six thousand, three hundred twenty-one".