60566441981 has 2 divisors, whose sum is σ = 60566441982. Its totient is φ = 60566441980.

The previous prime is 60566441953. The next prime is 60566442031. The reversal of 60566441981 is 18914466506.

It is an a-pointer prime, because the next prime (60566442031) can be obtained adding 60566441981 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46102531225 + 14463910756 = 214715^2 + 120266^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60566441981 is a prime.

It is a super-2 number, since 2×60566441981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60566441941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30283220990 + 30283220991.

It is an arithmetic number, because the mean of its divisors is an integer number (30283220991).

Almost surely, 2^60566441981 is an apocalyptic number.

It is an amenable number.

60566441981 is a deficient number, since it is larger than the sum of its proper divisors (1).

60566441981 is an equidigital number, since it uses as much as digits as its factorization.

60566441981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 60566441981 in words is "sixty billion, five hundred sixty-six million, four hundred forty-one thousand, nine hundred eighty-one".