740664770765489 has 2 divisors, whose sum is σ = 740664770765490. Its totient is φ = 740664770765488.

The previous prime is 740664770765467. The next prime is 740664770765609. The reversal of 740664770765489 is 984567077466047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 718412870400625 + 22251900364864 = 26803225^2 + 4717192^2 .

It is a cyclic number.

It is not a de Polignac number, because 740664770765489 - 2¹² = 740664770761393 is a prime.

It is not a weakly prime, because it can be changed into another prime (740664770765449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370332385382744 + 370332385382745.

It is an arithmetic number, because the mean of its divisors is an integer number (370332385382745).

Almost surely, 2^{740664770765489} is an apocalyptic number.

It is an amenable number.

740664770765489 is a deficient number, since it is larger than the sum of its proper divisors (1).

740664770765489 is an equidigital number, since it uses as much as digits as its factorization.

740664770765489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11948912640, while the sum is 80.

The spelling of 740664770765489 in words is "seven hundred forty trillion, six hundred sixty-four billion, seven hundred seventy million, seven hundred sixty-five thousand, four hundred eighty-nine".