77556304124 has 12 divisors (see below), whose sum is σ = 146163804024. Its totient is φ = 35795217264.

The previous prime is 77556304123. The next prime is 77556304139. The reversal of 77556304124 is 42140365577.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77556304121) 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 3 ways as a sum of consecutive naturals, for example, 745733642 + ... + 745733745.

It is an arithmetic number, because the mean of its divisors is an integer number (12180317002).

Almost surely, 2^77556304124 is an apocalyptic number.

It is an amenable number.

77556304124 is a deficient number, since it is larger than the sum of its proper divisors (68607499900).

77556304124 is a wasteful number, since it uses less digits than its factorization.

77556304124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491467404 (or 1491467402 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 77556304124 in words is "seventy-seven billion, five hundred fifty-six million, three hundred four thousand, one hundred twenty-four".