1466509539841 has 2 divisors, whose sum is σ = 1466509539842. Its totient is φ = 1466509539840.

The previous prime is 1466509539827. The next prime is 1466509539893. The reversal of 1466509539841 is 1489359056641.

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., 1453763129841 + 12746410000 = 1205721^2 + 112900^2 .

It is a cyclic number.

It is not a de Polignac number, because 1466509539841 - 2¹⁷ = 1466509408769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1466509539841.

It is not a weakly prime, because it can be changed into another prime (1466509539821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 733254769920 + 733254769921.

It is an arithmetic number, because the mean of its divisors is an integer number (733254769921).

Almost surely, 2^{1466509539841} is an apocalyptic number.

It is an amenable number.

1466509539841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1466509539841 is an equidigital number, since it uses as much as digits as its factorization.

1466509539841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27993600, while the sum is 61.

The spelling of 1466509539841 in words is "one trillion, four hundred sixty-six billion, five hundred nine million, five hundred thirty-nine thousand, eight hundred forty-one".