785786507213 has 2 divisors, whose sum is σ = 785786507214. Its totient is φ = 785786507212.

The previous prime is 785786507203. The next prime is 785786507251. The reversal of 785786507213 is 312705687587.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 769623707524 + 16162799689 = 877282^2 + 127133^2 .

It is a cyclic number.

It is not a de Polignac number, because 785786507213 - 2⁴ = 785786507197 is a prime.

It is a super-2 number, since 2×785786507213² (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 (785786507203) 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, 392893253606 + 392893253607.

It is an arithmetic number, because the mean of its divisors is an integer number (392893253607).

Almost surely, 2^785786507213 is an apocalyptic number.

It is an amenable number.

785786507213 is a deficient number, since it is larger than the sum of its proper divisors (1).

785786507213 is an equidigital number, since it uses as much as digits as its factorization.

785786507213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19756800, while the sum is 59.

The spelling of 785786507213 in words is "seven hundred eighty-five billion, seven hundred eighty-six million, five hundred seven thousand, two hundred thirteen".