785205088649 has 2 divisors, whose sum is σ = 785205088650. Its totient is φ = 785205088648.

The previous prime is 785205088597. The next prime is 785205088667. The reversal of 785205088649 is 946880502587.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 564429151225 + 220775937424 = 751285^2 + 469868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-785205088649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 785205088591 and 785205088600.

It is not a weakly prime, because it can be changed into another prime (785205078649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392602544324 + 392602544325.

It is an arithmetic number, because the mean of its divisors is an integer number (392602544325).

Almost surely, 2^785205088649 is an apocalyptic number.

It is an amenable number.

785205088649 is a deficient number, since it is larger than the sum of its proper divisors (1).

785205088649 is an equidigital number, since it uses as much as digits as its factorization.

785205088649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38707200, while the sum is 62.

The spelling of 785205088649 in words is "seven hundred eighty-five billion, two hundred five million, eighty-eight thousand, six hundred forty-nine".