1331089266473 has 2 divisors, whose sum is σ = 1331089266474. Its totient is φ = 1331089266472.

The previous prime is 1331089266449. The next prime is 1331089266509. The reversal of 1331089266473 is 3746629801331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1330453823209 + 635443264 = 1153453^2 + 25208^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331089266473 - 2¹⁴ = 1331089250089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1331089266373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665544633236 + 665544633237.

It is an arithmetic number, because the mean of its divisors is an integer number (665544633237).

Almost surely, 2^{1331089266473} is an apocalyptic number.

It is an amenable number.

1331089266473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331089266473 is an equidigital number, since it uses as much as digits as its factorization.

1331089266473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 53.

The spelling of 1331089266473 in words is "one trillion, three hundred thirty-one billion, eighty-nine million, two hundred sixty-six thousand, four hundred seventy-three".