77804356744 has 16 divisors (see below), whose sum is σ = 145907125020. Its totient is φ = 38895790080.

The previous prime is 77804356741. The next prime is 77804356753. The reversal of 77804356744 is 44765340877.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 73587412900 + 4216943844 = 271270^2 + 64938^2 .

It is not an unprimeable number, because it can be changed into a prime (77804356741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746577 + ... + 844384.

Almost surely, 2^77804356744 is an apocalyptic number.

It is an amenable number.

77804356744 is a deficient number, since it is larger than the sum of its proper divisors (68102768276).

77804356744 is a wasteful number, since it uses less digits than its factorization.

77804356744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597080 (or 1597076 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 55.

The spelling of 77804356744 in words is "seventy-seven billion, eight hundred four million, three hundred fifty-six thousand, seven hundred forty-four".