77606649603 has 48 divisors (see below), whose sum is σ = 129621772800. Its totient is φ = 43824781440.

The previous prime is 77606649581. The next prime is 77606649647. The reversal of 77606649603 is 30694660677.

It is not a de Polignac number, because 77606649603 - 2⁶ = 77606649539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77606649603.

It is not an unprimeable number, because it can be changed into a prime (77606649683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19841218 + ... + 19845128.

It is an arithmetic number, because the mean of its divisors is an integer number (2700453600).

Almost surely, 2^77606649603 is an apocalyptic number.

77606649603 is a deficient number, since it is larger than the sum of its proper divisors (52015123197).

77606649603 is a wasteful number, since it uses less digits than its factorization.

77606649603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7552 (or 7549 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 54.

The spelling of 77606649603 in words is "seventy-seven billion, six hundred six million, six hundred forty-nine thousand, six hundred three".