77748583928 has 16 divisors (see below), whose sum is σ = 145788492480. Its totient is φ = 38871652608.

The previous prime is 77748583909. The next prime is 77748583933. The reversal of 77748583928 is 82938584777.

It is a congruent number.

It is an unprimeable number.

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, 201800 + ... + 442967.

It is an arithmetic number, because the mean of its divisors is an integer number (9111780780).

Almost surely, 2^77748583928 is an apocalyptic number.

It is an amenable number.

77748583928 is a deficient number, since it is larger than the sum of its proper divisors (68039908552).

77748583928 is a wasteful number, since it uses less digits than its factorization.

77748583928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659846 (or 659842 counting only the distinct ones).

The product of its digits is 189665280, while the sum is 68.

The spelling of 77748583928 in words is "seventy-seven billion, seven hundred forty-eight million, five hundred eighty-three thousand, nine hundred twenty-eight".