9942977745047 has 2 divisors, whose sum is σ = 9942977745048. Its totient is φ = 9942977745046.

The previous prime is 9942977744981. The next prime is 9942977745091. The reversal of 9942977745047 is 7405477792499.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9942977745047 - 2¹⁰ = 9942977744023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9942977745947) 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, 4971488872523 + 4971488872524.

It is an arithmetic number, because the mean of its divisors is an integer number (4971488872524).

Almost surely, 2^{9942977745047} is an apocalyptic number.

9942977745047 is a deficient number, since it is larger than the sum of its proper divisors (1).

9942977745047 is an equidigital number, since it uses as much as digits as its factorization.

9942977745047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120210560, while the sum is 74.

The spelling of 9942977745047 in words is "nine trillion, nine hundred forty-two billion, nine hundred seventy-seven million, seven hundred forty-five thousand, forty-seven".