47768866693 has 2 divisors, whose sum is σ = 47768866694. Its totient is φ = 47768866692.

The previous prime is 47768866667. The next prime is 47768866699. The reversal of 47768866693 is 39666886774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43966541124 + 3802325569 = 209682^2 + 61663^2 .

It is a cyclic number.

It is not a de Polignac number, because 47768866693 - 2¹⁷ = 47768735621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47768866699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23884433346 + 23884433347.

It is an arithmetic number, because the mean of its divisors is an integer number (23884433347).

Almost surely, 2^47768866693 is an apocalyptic number.

It is an amenable number.

47768866693 is a deficient number, since it is larger than the sum of its proper divisors (1).

47768866693 is an equidigital number, since it uses as much as digits as its factorization.

47768866693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 438939648, while the sum is 70.

The spelling of 47768866693 in words is "forty-seven billion, seven hundred sixty-eight million, eight hundred sixty-six thousand, six hundred ninety-three".