77053180388 has 12 divisors (see below), whose sum is σ = 134846186412. Its totient is φ = 38525698560.

The previous prime is 77053180381. The next prime is 77053180397. The reversal of 77053180388 is 88308135077.

It can be written as a sum of positive squares in 2 ways, for example, as 44621492644 + 32431687744 = 211238^2 + 180088^2 .

It is not an unprimeable number, because it can be changed into a prime (77053180381) 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, 4745 + ... + 392592.

It is an arithmetic number, because the mean of its divisors is an integer number (11237182201).

Almost surely, 2^77053180388 is an apocalyptic number.

It is an amenable number.

77053180388 is a deficient number, since it is larger than the sum of its proper divisors (57793006024).

77053180388 is a wasteful number, since it uses less digits than its factorization.

77053180388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445822 (or 445820 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 77053180388 in words is "seventy-seven billion, fifty-three million, one hundred eighty thousand, three hundred eighty-eight".