77367012405904 has 45 divisors (see below), whose sum is σ = 162317180523369. Its totient is φ = 35707640779200.

The previous prime is 77367012405901. The next prime is 77367012405911. The reversal of 77367012405904 is 40950421076377.

The square root of 77367012405904 is 8795852.

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., 11444824320400 + 65922188085504 = 3383020^2 + 8119248^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77367012405901) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 457299729 + ... + 457468879.

Almost surely, 2^{77367012405904} is an apocalyptic number.

77367012405904 is the 8795852-nd square number.

It is an amenable number.

77367012405904 is an abundant number, since it is smaller than the sum of its proper divisors (84950168117465).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77367012405904 is an frugal number, since it uses more digits than its factorization.

77367012405904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338336 (or 169166 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 55.

The spelling of 77367012405904 in words is "seventy-seven trillion, three hundred sixty-seven billion, twelve million, four hundred five thousand, nine hundred four".