1443381077081 has 2 divisors, whose sum is σ = 1443381077082. Its totient is φ = 1443381077080.

The previous prime is 1443381077077. The next prime is 1443381077167. The reversal of 1443381077081 is 1807701833441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1402246747225 + 41134329856 = 1184165^2 + 202816^2 .

It is a cyclic number.

It is not a de Polignac number, because 1443381077081 - 2² = 1443381077077 is a prime.

It is a super-2 number, since 2×1443381077081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1443381077011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721690538540 + 721690538541.

It is an arithmetic number, because the mean of its divisors is an integer number (721690538541).

Almost surely, 2^{1443381077081} is an apocalyptic number.

It is an amenable number.

1443381077081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1443381077081 is an equidigital number, since it uses as much as digits as its factorization.

1443381077081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 1443381077081 in words is "one trillion, four hundred forty-three billion, three hundred eighty-one million, seventy-seven thousand, eighty-one".