77757783320548 has 12 divisors (see below), whose sum is σ = 136076479782012. Its totient is φ = 38878789097120.

The previous prime is 77757783320489. The next prime is 77757783320713. The reversal of 77757783320548 is 84502338775777.

77757783320548 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 43339285894564 + 34418497425984 = 6583258^2 + 5866728^2 .

It is an unprimeable number.

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, 23922163 + ... + 26977498.

It is an arithmetic number, because the mean of its divisors is an integer number (11339706648501).

Almost surely, 2^{77757783320548} is an apocalyptic number.

It is an amenable number.

77757783320548 is a deficient number, since it is larger than the sum of its proper divisors (58318696461464).

77757783320548 is a wasteful number, since it uses less digits than its factorization.

77757783320548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51281582 (or 51281580 counting only the distinct ones).

The product of its (nonzero) digits is 1936166400, while the sum is 73.

The spelling of 77757783320548 in words is "seventy-seven trillion, seven hundred fifty-seven billion, seven hundred eighty-three million, three hundred twenty thousand, five hundred forty-eight".