742783681009 has 2 divisors, whose sum is σ = 742783681010. Its totient is φ = 742783681008.

The previous prime is 742783680953. The next prime is 742783681039. The reversal of 742783681009 is 900186387247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 684709910784 + 58073770225 = 827472^2 + 240985^2 .

It is a cyclic number.

It is not a de Polignac number, because 742783681009 - 2¹³ = 742783672817 is a prime.

It is not a weakly prime, because it can be changed into another prime (742783681039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371391840504 + 371391840505.

It is an arithmetic number, because the mean of its divisors is an integer number (371391840505).

Almost surely, 2^742783681009 is an apocalyptic number.

It is an amenable number.

742783681009 is a deficient number, since it is larger than the sum of its proper divisors (1).

742783681009 is an equidigital number, since it uses as much as digits as its factorization.

742783681009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 742783681009 in words is "seven hundred forty-two billion, seven hundred eighty-three million, six hundred eighty-one thousand, nine".