77039468047369 has 9 divisors (see below), whose sum is σ = 77165477319189. Its totient is φ = 76913664253440.

The previous prime is 77039468047319. The next prime is 77039468047403. The reversal of 77039468047369 is 96374086493077.

The square root of 77039468047369 is 8777213.

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

It can be written as a sum of positive squares in 4 ways, for example, as 67906911519225 + 9132556528144 = 8240565^2 + 3022012^2 .

It is not a de Polignac number, because 77039468047369 - 2²¹ = 77039465950217 is a prime.

It is a super-2 number, since 2×77039468047369² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77039468047319) 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, 5626186687 + ... + 5626200379.

Almost surely, 2^{77039468047369} is an apocalyptic number.

77039468047369 is the 8777213-rd square number.

77039468047369 is the 4388607-th centered octagonal number.

It is an amenable number.

77039468047369 is a deficient number, since it is larger than the sum of its proper divisors (126009271820).

77039468047369 is an frugal number, since it uses more digits than its factorization.

77039468047369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28668 (or 14334 counting only the distinct ones).

The product of its (nonzero) digits is 1152216576, while the sum is 73.

The spelling of 77039468047369 in words is "seventy-seven trillion, thirty-nine billion, four hundred sixty-eight million, forty-seven thousand, three hundred sixty-nine".