740778229649 has 2 divisors, whose sum is σ = 740778229650. Its totient is φ = 740778229648.

The previous prime is 740778229603. The next prime is 740778229673. The reversal of 740778229649 is 946922877047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426483445249 + 314294784400 = 653057^2 + 560620^2 .

It is a cyclic number.

It is not a de Polignac number, because 740778229649 - 2⁸ = 740778229393 is a prime.

It is not a weakly prime, because it can be changed into another prime (740778229349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370389114824 + 370389114825.

It is an arithmetic number, because the mean of its divisors is an integer number (370389114825).

Almost surely, 2^740778229649 is an apocalyptic number.

It is an amenable number.

740778229649 is a deficient number, since it is larger than the sum of its proper divisors (1).

740778229649 is an equidigital number, since it uses as much as digits as its factorization.

740778229649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85349376, while the sum is 65.

The spelling of 740778229649 in words is "seven hundred forty billion, seven hundred seventy-eight million, two hundred twenty-nine thousand, six hundred forty-nine".