783420672773 has 2 divisors, whose sum is σ = 783420672774. Its totient is φ = 783420672772.

The previous prime is 783420672721. The next prime is 783420672803. The reversal of 783420672773 is 377276024387.

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., 396595138564 + 386825534209 = 629758^2 + 621953^2 .

It is an emirp because it is prime and its reverse (377276024387) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-783420672773 is a prime.

It is a super-2 number, since 2×783420672773² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (783420672973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391710336386 + 391710336387.

It is an arithmetic number, because the mean of its divisors is an integer number (391710336387).

Almost surely, 2^783420672773 is an apocalyptic number.

It is an amenable number.

783420672773 is a deficient number, since it is larger than the sum of its proper divisors (1).

783420672773 is an equidigital number, since it uses as much as digits as its factorization.

783420672773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16595712, while the sum is 56.

The spelling of 783420672773 in words is "seven hundred eighty-three billion, four hundred twenty million, six hundred seventy-two thousand, seven hundred seventy-three".