99278655943 has 2 divisors, whose sum is σ = 99278655944. Its totient is φ = 99278655942.

The previous prime is 99278655919. The next prime is 99278655991. The reversal of 99278655943 is 34955687299.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99278655943 - 2¹⁷ = 99278524871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99278650943) 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, 49639327971 + 49639327972.

It is an arithmetic number, because the mean of its divisors is an integer number (49639327972).

Almost surely, 2^99278655943 is an apocalyptic number.

99278655943 is a deficient number, since it is larger than the sum of its proper divisors (1).

99278655943 is an equidigital number, since it uses as much as digits as its factorization.

99278655943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 146966400, while the sum is 67.

The spelling of 99278655943 in words is "ninety-nine billion, two hundred seventy-eight million, six hundred fifty-five thousand, nine hundred forty-three".