770778356823 has 10 divisors (see below), whose sum is σ = 1151409644264. Its totient is φ = 513852237828.

The previous prime is 770778356809. The next prime is 770778356827. The reversal of 770778356823 is 328653877077.

It is not a de Polignac number, because 770778356823 - 2⁴ = 770778356807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770778356827) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4757891011 + ... + 4757891172.

Almost surely, 2^770778356823 is an apocalyptic number.

770778356823 is a deficient number, since it is larger than the sum of its proper divisors (380631287441).

770778356823 is an equidigital number, since it uses as much as digits as its factorization.

770778356823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9515782195 (or 9515782186 counting only the distinct ones).

The product of its (nonzero) digits is 82978560, while the sum is 63.

The spelling of 770778356823 in words is "seven hundred seventy billion, seven hundred seventy-eight million, three hundred fifty-six thousand, eight hundred twenty-three".