77404378196 has 24 divisors (see below), whose sum is σ = 136514325024. Its totient is φ = 38400383840.

The previous prime is 77404378187. The next prime is 77404378201. The reversal of 77404378196 is 69187340477.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5617211 + ... + 5630973.

It is an arithmetic number, because the mean of its divisors is an integer number (5688096876).

Almost surely, 2^77404378196 is an apocalyptic number.

It is an amenable number.

77404378196 is a deficient number, since it is larger than the sum of its proper divisors (59109946828).

77404378196 is a wasteful number, since it uses less digits than its factorization.

77404378196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24631 (or 24629 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 56.

The spelling of 77404378196 in words is "seventy-seven billion, four hundred four million, three hundred seventy-eight thousand, one hundred ninety-six".