785143968229 has 2 divisors, whose sum is σ = 785143968230. Its totient is φ = 785143968228.

The previous prime is 785143968157. The next prime is 785143968239. The reversal of 785143968229 is 922869341587.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 442477736100 + 342666232129 = 665190^2 + 585377^2 .

It is a cyclic number.

It is not a de Polignac number, because 785143968229 - 2⁷ = 785143968101 is a prime.

It is a super-2 number, since 2×785143968229² (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 (785143968239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392571984114 + 392571984115.

It is an arithmetic number, because the mean of its divisors is an integer number (392571984115).

Almost surely, 2^785143968229 is an apocalyptic number.

It is an amenable number.

785143968229 is a deficient number, since it is larger than the sum of its proper divisors (1).

785143968229 is an equidigital number, since it uses as much as digits as its factorization.

785143968229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52254720, while the sum is 64.

The spelling of 785143968229 in words is "seven hundred eighty-five billion, one hundred forty-three million, nine hundred sixty-eight thousand, two hundred twenty-nine".