1466989475641 has 2 divisors, whose sum is σ = 1466989475642. Its totient is φ = 1466989475640.

The previous prime is 1466989475407. The next prime is 1466989475689. The reversal of 1466989475641 is 1465749896641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 974522378041 + 492467097600 = 987179^2 + 701760^2 .

It is an emirp because it is prime and its reverse (1465749896641) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1466989475641 is a prime.

It is a super-2 number, since 2×1466989475641² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1466989475041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 733494737820 + 733494737821.

It is an arithmetic number, because the mean of its divisors is an integer number (733494737821).

Almost surely, 2^{1466989475641} is an apocalyptic number.

It is an amenable number.

1466989475641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1466989475641 is an equidigital number, since it uses as much as digits as its factorization.

1466989475641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 313528320, while the sum is 70.

The spelling of 1466989475641 in words is "one trillion, four hundred sixty-six billion, nine hundred eighty-nine million, four hundred seventy-five thousand, six hundred forty-one".