77860484752 has 20 divisors (see below), whose sum is σ = 150863157756. Its totient is φ = 38928056960.

The previous prime is 77860484717. The next prime is 77860484797. The reversal of 77860484752 is 25748406877.

It can be written as a sum of positive squares in 2 ways, for example, as 5497332736 + 72363152016 = 74144^2 + 269004^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179502 + ... + 433522.

Almost surely, 2^77860484752 is an apocalyptic number.

It is an amenable number.

77860484752 is a deficient number, since it is larger than the sum of its proper divisors (73002673004).

77860484752 is a wasteful number, since it uses less digits than its factorization.

77860484752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273186 (or 273180 counting only the distinct ones).

The product of its (nonzero) digits is 21073920, while the sum is 58.

The spelling of 77860484752 in words is "seventy-seven billion, eight hundred sixty million, four hundred eighty-four thousand, seven hundred fifty-two".