77823083945 has 8 divisors (see below), whose sum is σ = 93497187336. Its totient is φ = 62185476096.

The previous prime is 77823083929. The next prime is 77823083957. The reversal of 77823083945 is 54938032877.

It can be written as a sum of positive squares in 4 ways, for example, as 426174736 + 77396909209 = 20644^2 + 278203^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77823083945 - 2⁴ = 77823083929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9119192 + ... + 9127721.

It is an arithmetic number, because the mean of its divisors is an integer number (11687148417).

Almost surely, 2^77823083945 is an apocalyptic number.

It is an amenable number.

77823083945 is a deficient number, since it is larger than the sum of its proper divisors (15674103391).

77823083945 is a wasteful number, since it uses less digits than its factorization.

77823083945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18247771.

The product of its (nonzero) digits is 10160640, while the sum is 56.

The spelling of 77823083945 in words is "seventy-seven billion, eight hundred twenty-three million, eighty-three thousand, nine hundred forty-five".