77394127204 has 27 divisors (see below), whose sum is σ = 142962836121. Its totient is φ = 36655368480.

The previous prime is 77394127201. The next prime is 77394127259. The reversal of 77394127204 is 40272149377.

The square root of 77394127204 is 278198.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 21141604 + 77372985600 = 4598^2 + 278160^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77394127201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10567864 + ... + 10575184.

Almost surely, 2^77394127204 is an apocalyptic number.

77394127204 is the 278198-th square number.

It is an amenable number.

77394127204 is a deficient number, since it is larger than the sum of its proper divisors (65568708917).

77394127204 is an frugal number, since it uses more digits than its factorization.

77394127204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14684 (or 7342 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 46.

The spelling of 77394127204 in words is "seventy-seven billion, three hundred ninety-four million, one hundred twenty-seven thousand, two hundred four".