77042853329 has 4 divisors (see below), whose sum is σ = 82969226676. Its totient is φ = 71116479984.

The previous prime is 77042853319. The next prime is 77042853331. The reversal of 77042853329 is 92335824077.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36778417729 + 40264435600 = 191777^2 + 200660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77042853329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77042853319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2963186654 + ... + 2963186679.

It is an arithmetic number, because the mean of its divisors is an integer number (20742306669).

Almost surely, 2^77042853329 is an apocalyptic number.

It is an amenable number.

77042853329 is a deficient number, since it is larger than the sum of its proper divisors (5926373347).

77042853329 is a wasteful number, since it uses less digits than its factorization.

77042853329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5926373346.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 77042853329 in words is "seventy-seven billion, forty-two million, eight hundred fifty-three thousand, three hundred twenty-nine".