49881666666673 has 2 divisors, whose sum is σ = 49881666666674. Its totient is φ = 49881666666672.

The previous prime is 49881666666653. The next prime is 49881666666731. The reversal of 49881666666673 is 37666666618894.

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., 30199728903184 + 19681937763489 = 5495428^2 + 4436433^2 .

It is a cyclic number.

It is not a de Polignac number, because 49881666666673 - 2¹⁷ = 49881666535601 is a prime.

It is not a weakly prime, because it can be changed into another prime (49881666666653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24940833333336 + 24940833333337.

It is an arithmetic number, because the mean of its divisors is an integer number (24940833333337).

Almost surely, 2^{49881666666673} is an apocalyptic number.

It is an amenable number.

49881666666673 is a deficient number, since it is larger than the sum of its proper divisors (1).

49881666666673 is an equidigital number, since it uses as much as digits as its factorization.

49881666666673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13544423424, while the sum is 82.

The spelling of 49881666666673 in words is "forty-nine trillion, eight hundred eighty-one billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred seventy-three".