47075356781 has 2 divisors, whose sum is σ = 47075356782. Its totient is φ = 47075356780.

The previous prime is 47075356733. The next prime is 47075356841. The reversal of 47075356781 is 18765357074.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37711698025 + 9363658756 = 194195^2 + 96766^2 .

It is a cyclic number.

It is not a de Polignac number, because 47075356781 - 2⁶ = 47075356717 is a prime.

It is a super-3 number, since 3×47075356781³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47075356711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23537678390 + 23537678391.

It is an arithmetic number, because the mean of its divisors is an integer number (23537678391).

Almost surely, 2^47075356781 is an apocalyptic number.

It is an amenable number.

47075356781 is a deficient number, since it is larger than the sum of its proper divisors (1).

47075356781 is an equidigital number, since it uses as much as digits as its factorization.

47075356781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4939200, while the sum is 53.

The spelling of 47075356781 in words is "forty-seven billion, seventy-five million, three hundred fifty-six thousand, seven hundred eighty-one".