745330443553 has 2 divisors, whose sum is σ = 745330443554. Its totient is φ = 745330443552.

The previous prime is 745330443503. The next prime is 745330443581. The reversal of 745330443553 is 355344033547.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 742987109089 + 2343334464 = 861967^2 + 48408^2 .

It is a cyclic number.

It is not a de Polignac number, because 745330443553 - 2⁹ = 745330443041 is a prime.

It is not a weakly prime, because it can be changed into another prime (745330443503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372665221776 + 372665221777.

It is an arithmetic number, because the mean of its divisors is an integer number (372665221777).

Almost surely, 2^745330443553 is an apocalyptic number.

It is an amenable number.

745330443553 is a deficient number, since it is larger than the sum of its proper divisors (1).

745330443553 is an equidigital number, since it uses as much as digits as its factorization.

745330443553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536000, while the sum is 46.

The spelling of 745330443553 in words is "seven hundred forty-five billion, three hundred thirty million, four hundred forty-three thousand, five hundred fifty-three".