77728462435308 has 12 divisors (see below), whose sum is σ = 181366412349080. Its totient is φ = 25909487478432.

The previous prime is 77728462435307. The next prime is 77728462435361. The reversal of 77728462435308 is 80353426482777.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (77728462435307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3238685934793 + ... + 3238685934816.

Almost surely, 2^{77728462435308} is an apocalyptic number.

It is an amenable number.

77728462435308 is an abundant number, since it is smaller than the sum of its proper divisors (103637949913772).

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

77728462435308 is a wasteful number, since it uses less digits than its factorization.

77728462435308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6477371869616 (or 6477371869614 counting only the distinct ones).

The product of its (nonzero) digits is 379330560, while the sum is 66.

The spelling of 77728462435308 in words is "seventy-seven trillion, seven hundred twenty-eight billion, four hundred sixty-two million, four hundred thirty-five thousand, three hundred eight".