99994903816807 has 2 divisors, whose sum is σ = 99994903816808. Its totient is φ = 99994903816806.

The previous prime is 99994903816757. The next prime is 99994903816831. The reversal of 99994903816807 is 70861830949999.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99994903816807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99994903816607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49997451908403 + 49997451908404.

It is an arithmetic number, because the mean of its divisors is an integer number (49997451908404).

Almost surely, 2^{99994903816807} is an apocalyptic number.

99994903816807 is a deficient number, since it is larger than the sum of its proper divisors (1).

99994903816807 is an equidigital number, since it uses as much as digits as its factorization.

99994903816807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1904684544, while the sum is 82.

The spelling of 99994903816807 in words is "ninety-nine trillion, nine hundred ninety-four billion, nine hundred three million, eight hundred sixteen thousand, eight hundred seven".