77804369144 has 8 divisors (see below), whose sum is σ = 145883192160. Its totient is φ = 38902184568.

The previous prime is 77804369077. The next prime is 77804369171. The reversal of 77804369144 is 44196340877.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4862773064 + ... + 4862773079.

It is an arithmetic number, because the mean of its divisors is an integer number (18235399020).

Almost surely, 2^77804369144 is an apocalyptic number.

It is an amenable number.

77804369144 is a deficient number, since it is larger than the sum of its proper divisors (68078823016).

77804369144 is a wasteful number, since it uses less digits than its factorization.

77804369144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9725546149 (or 9725546145 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 77804369144 in words is "seventy-seven billion, eight hundred four million, three hundred sixty-nine thousand, one hundred forty-four".