99727111332389 has 2 divisors, whose sum is σ = 99727111332390. Its totient is φ = 99727111332388.

The previous prime is 99727111332347. The next prime is 99727111332437. The reversal of 99727111332389 is 98323311172799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91986168447364 + 7740942885025 = 9590942^2 + 2782255^2 .

It is a cyclic number.

It is not a de Polignac number, because 99727111332389 - 2⁸ = 99727111332133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99727111332689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49863555666194 + 49863555666195.

It is an arithmetic number, because the mean of its divisors is an integer number (49863555666195).

Almost surely, 2^{99727111332389} is an apocalyptic number.

It is an amenable number.

99727111332389 is a deficient number, since it is larger than the sum of its proper divisors (1).

99727111332389 is an equidigital number, since it uses as much as digits as its factorization.

99727111332389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30862944, while the sum is 65.

The spelling of 99727111332389 in words is "ninety-nine trillion, seven hundred twenty-seven billion, one hundred eleven million, three hundred thirty-two thousand, three hundred eighty-nine".