785435684641 has 2 divisors, whose sum is σ = 785435684642. Its totient is φ = 785435684640.

The previous prime is 785435684611. The next prime is 785435684669. The reversal of 785435684641 is 146486534587.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 526054287616 + 259381397025 = 725296^2 + 509295^2 .

It is a cyclic number.

It is not a de Polignac number, because 785435684641 - 2⁹ = 785435684129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 785435684641.

It is not a weakly prime, because it can be changed into another prime (785435684611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392717842320 + 392717842321.

It is an arithmetic number, because the mean of its divisors is an integer number (392717842321).

Almost surely, 2^785435684641 is an apocalyptic number.

It is an amenable number.

785435684641 is a deficient number, since it is larger than the sum of its proper divisors (1).

785435684641 is an equidigital number, since it uses as much as digits as its factorization.

785435684641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77414400, while the sum is 61.

The spelling of 785435684641 in words is "seven hundred eighty-five billion, four hundred thirty-five million, six hundred eighty-four thousand, six hundred forty-one".