783317441321 has 2 divisors, whose sum is σ = 783317441322. Its totient is φ = 783317441320.

The previous prime is 783317441317. The next prime is 783317441341. The reversal of 783317441321 is 123144713387.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 770181760000 + 13135681321 = 877600^2 + 114611^2 .

It is a cyclic number.

It is not a de Polignac number, because 783317441321 - 2² = 783317441317 is a prime.

It is a super-2 number, since 2×783317441321² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (783317441341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391658720660 + 391658720661.

It is an arithmetic number, because the mean of its divisors is an integer number (391658720661).

Almost surely, 2^783317441321 is an apocalyptic number.

It is an amenable number.

783317441321 is a deficient number, since it is larger than the sum of its proper divisors (1).

783317441321 is an equidigital number, since it uses as much as digits as its factorization.

783317441321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 44.

The spelling of 783317441321 in words is "seven hundred eighty-three billion, three hundred seventeen million, four hundred forty-one thousand, three hundred twenty-one".