99864321407 has 2 divisors, whose sum is σ = 99864321408. Its totient is φ = 99864321406.

The previous prime is 99864321379. The next prime is 99864321409. The reversal of 99864321407 is 70412346899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99864321407 - 2¹⁰ = 99864320383 is a prime.

Together with 99864321409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99864321409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49932160703 + 49932160704.

It is an arithmetic number, because the mean of its divisors is an integer number (49932160704).

Almost surely, 2^99864321407 is an apocalyptic number.

99864321407 is a deficient number, since it is larger than the sum of its proper divisors (1).

99864321407 is an equidigital number, since it uses as much as digits as its factorization.

99864321407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 99864321407 in words is "ninety-nine billion, eight hundred sixty-four million, three hundred twenty-one thousand, four hundred seven".