778077530830 has 32 divisors (see below), whose sum is σ = 1411042664448. Its totient is φ = 308900580000.

The previous prime is 778077530767. The next prime is 778077530833. The reversal of 778077530830 is 38035770877.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778077530833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1514169 + ... + 1961851.

It is an arithmetic number, because the mean of its divisors is an integer number (44095083264).

Almost surely, 2^778077530830 is an apocalyptic number.

778077530830 is a deficient number, since it is larger than the sum of its proper divisors (632965133618).

778077530830 is a wasteful number, since it uses less digits than its factorization.

778077530830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448992.

The product of its (nonzero) digits is 6914880, while the sum is 55.

The spelling of 778077530830 in words is "seven hundred seventy-eight billion, seventy-seven million, five hundred thirty thousand, eight hundred thirty".