77964727830 has 64 divisors (see below), whose sum is σ = 204251943168. Its totient is φ = 18888863360.

The previous prime is 77964727823. The next prime is 77964727847. The reversal of 77964727830 is 3872746977.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 468049 + ... + 612371.

It is an arithmetic number, because the mean of its divisors is an integer number (3191436612).

Almost surely, 2^77964727830 is an apocalyptic number.

77964727830 is an abundant number, since it is smaller than the sum of its proper divisors (126287215338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77964727830 is a wasteful number, since it uses less digits than its factorization.

77964727830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145981.

The product of its (nonzero) digits is 24893568, while the sum is 60.

The spelling of 77964727830 in words is "seventy-seven billion, nine hundred sixty-four million, seven hundred twenty-seven thousand, eight hundred thirty".