331340166887789 has 2 divisors, whose sum is σ = 331340166887790. Its totient is φ = 331340166887788.

The previous prime is 331340166887777. The next prime is 331340166887801. The reversal of 331340166887789 is 987788661043133.

It is a balanced prime because it is at equal distance from previous prime (331340166887777) and next prime (331340166887801).

It can be written as a sum of positive squares in only one way, i.e., 201641278002025 + 129698888885764 = 14200045^2 + 11388542^2 .

It is a cyclic number.

It is not a de Polignac number, because 331340166887789 - 2¹⁶ = 331340166822253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331340166857789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165670083443894 + 165670083443895.

It is an arithmetic number, because the mean of its divisors is an integer number (165670083443895).

Almost surely, 2^{331340166887789} is an apocalyptic number.

It is an amenable number.

331340166887789 is a deficient number, since it is larger than the sum of its proper divisors (1).

331340166887789 is an equidigital number, since it uses as much as digits as its factorization.

331340166887789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 877879296, while the sum is 74.

The spelling of 331340166887789 in words is "three hundred thirty-one trillion, three hundred forty billion, one hundred sixty-six million, eight hundred eighty-seven thousand, seven hundred eighty-nine".