47876786509 has 2 divisors, whose sum is σ = 47876786510. Its totient is φ = 47876786508.

The previous prime is 47876786483. The next prime is 47876786593. The reversal of 47876786509 is 90568767874.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36056313225 + 11820473284 = 189885^2 + 108722^2 .

It is a cyclic number.

It is not a de Polignac number, because 47876786509 - 2¹³ = 47876778317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47876784509) 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, 23938393254 + 23938393255.

It is an arithmetic number, because the mean of its divisors is an integer number (23938393255).

Almost surely, 2^47876786509 is an apocalyptic number.

It is an amenable number.

47876786509 is a deficient number, since it is larger than the sum of its proper divisors (1).

47876786509 is an equidigital number, since it uses as much as digits as its factorization.

47876786509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142248960, while the sum is 67.

The spelling of 47876786509 in words is "forty-seven billion, eight hundred seventy-six million, seven hundred eighty-six thousand, five hundred nine".