99774341321 has 2 divisors, whose sum is σ = 99774341322. Its totient is φ = 99774341320.

The previous prime is 99774341267. The next prime is 99774341411. The reversal of 99774341321 is 12314347799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81727374400 + 18046966921 = 285880^2 + 134339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99774341321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99774341321.

It is not a weakly prime, because it can be changed into another prime (99774341221) 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, 49887170660 + 49887170661.

It is an arithmetic number, because the mean of its divisors is an integer number (49887170661).

Almost surely, 2^99774341321 is an apocalyptic number.

It is an amenable number.

99774341321 is a deficient number, since it is larger than the sum of its proper divisors (1).

99774341321 is an equidigital number, since it uses as much as digits as its factorization.

99774341321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 50.

The spelling of 99774341321 in words is "ninety-nine billion, seven hundred seventy-four million, three hundred forty-one thousand, three hundred twenty-one".